Daily Process Verification
It is critical now more than ever in the game of bowling to verify your lane maintenance procedures on a daily basis. This simply means using your basic senses to ensure the lane machine that is being run has actually performed the task adequately. Why is this you may ask?
Simply put, the daily responsibility of lane maintenance has somewhat shifted away from the operator and directly to the lane machines that are currently being used. Many bowling centers have automated lane machines that move themselves or manual machines that are pre-programmed and the operator simply presses a button while the machine does all of the lane maintenance.
Just remember it is still the responsibility of the operator to ensure the machine has achieved what it was programmed to do. Just because the lane machine went down the lane and returned back to the foul line does not necessarily mean the lane has cleaned and conditioned properly.
Simply training your eyes, ears, and hands to focus on specific aspects of the lane machine as well as the lane surface will give you daily peace of mind and your customers will be more than satisfied with the end result.
If you utilize these simple tips every time you perform lane maintenance your customers will keep coming back for more. The thing that people look for the most in bowling is consistency, not high scoring. However high scoring inevitably evolves from consistency which means there is a way to give your customers both. Just spending an extra ten minutes per day will guarantee your customers satisfaction every time they come to your center to bowl.
Scan the QR code below to view these daily lane maintenance tips.
Sound, sight, and touch will prevent lane maintenance disasters that can occur when everything seems to be operating normally from a lane machine standpoint.
Sound:
Listening to a lane machine while in operation is much like listening to your own personal vehicle every time you start it and proceed to drive. There are different types of noises within all mechanical things that will sound good, bad, or normal. The more you familiarize yourself with the equipment you are running, the quicker you will be able to tell when something is about to fail or already has. Most lane machines have error codes that will shut the machine down in certain situations, but there are a lot of things that can go wrong, and the machine will still appear to be working to the untrained operator.
A great starting point is for you to train yourself and your staff to hear the vacuum motor when the machine is going down the lane and when it turns on and off during operation. Familiarize yourself with the sound of the cleaner pump when the machine is in the cleaning mode. A conventional spray jet pump can have a faulty diaphragm and still spray cleaner, but there will be substantially less volume than what is needed. A peristaltic cleaner pump will change sound as the tubing starts to wear which is a sign that it needs to be changed.
Neither the vacuum motor nor the cleaner pump failing will prompt an error on the lane machine. It will continue to run every lane and you will not know there is a problem until the lanes are turned on for play and by then it will be too late.
Sight:
Visually inspect the lane machine before every use to ensure there is enough lane conditioner, cleaner, and cloth to complete the number of lanes you need to run. If you are operating a battery lane machine, verify there is enough battery power to complete the total number of lanes that are going to be cleaned and conditioned.
Personally confirm that the program settings match the program sheet for the pattern that you will be applying and if applicable perform a volume check for the cleaner output and the oil output for the pattern in question. Proceed to enter the starting sequence to enable the lane machine. Start the lane machine and walk beside it as it travels down lane towards the pin deck.
Pay attention to the data that is displayed on the keypad such as drive speeds, distance traveled, program number being run, and anything else that your lane machine displays. The numbers should always be consistent from lane to lane and if a variance is noticed the operator should stop the machine and investigate why there may be inconsistencies.
Watch the machine as it applies lane cleaner and lane conditioner. Inspect the pin deck area to ensure there is no residue or lane cleaner being left behind and the machine is traveling far enough before it reverses out of the pit. Excess moisture on the pin deck will result in sliding pins, possible out of ranges and reduces scoring due to lack of pin carry. The “Backends” as they are referred to in our industry consist of every inch of the lane past the oil line and up to the pin deck. This area of the lane should be residue free and squeaky clean.
Once the machine returns to the foul line, walk back down the lane and look over the oil pattern that has just been applied. The lane pattern should look relatively smooth and uniform depending on the type of pattern being run. After the machine has returned to the foul line make sure there are no drips of lane oil or cleaner, streaks in the lane pattern, or anything that looks abnormal to what you are used to seeing every day. Once everything has been verified you may continue running the remainder of the lanes.
Touch:
Once the lanes have been cleaned and conditioned, it is always a good idea to at least do a tactile inspection of your backends as well as your lane pattern. This is something lane maintenance personnel have done for decades, and at one part in our history, was the primary inspection regarding the passing or failing of a lane pattern in sanctioned play.
Our Kegel Team has always made a habit of walking our lanes for a visual and tactile inspection after every lane maintenance routine. Walk the length of the lane and locate the end of the oil pattern and confirm all of the lanes have the same look and distance.
Inspect multiple lanes in the backend area to ensure they are clean and free of residue. Use your knuckles as a way to accurately feel the cleanliness of the lane surface by rubbing them across a section of the backend. There should be no marks or film on any portion of the backend of the lane as this will affect carry down and create inconsistent ball motion.
Pick a lane in the middle of the center and use this lane every day as your gauge on what you feel when you run your fingers across the oil pattern at various distances. Start in the head section of the lane eight feet from the foul line. Using your index and middle fingers, lightly place them on the 2 board on one side of the lane and push your fingertips across 2-20 board and get a feel for how the pattern has less oil on the outside of the pattern and more towards the center. Move to the arrow section of the lane and repeat the process. Here you will feel more of a difference between the outside volume versus the inside boards in the lane pattern than you would have at 8 feet. Continue this at 30-35 feet and in the middle of the pattern taper somewhere between 36-44 feey depending on the pattern length.
Most successful lane patterns are crowned in shape or blended from outside to inside by increasing oil volume board-by-board. These patterns will typically be 40-44 feet in length for a standard house pattern and will have a front to back taper of 7-10 feet depending on the lane surface and chemical being used.
If you utilize these simple steps to verify your lane maintenance procedures on a daily basis you can rest assured, you have given your clientele a consistent bowling experience day after day and week after week. As outlined earlier in this article, consistency is the key to happy customers and a successful business operation.
These are but a few suggestions that our lane maintenance personnel uses at every event we do around the world. There are more complex verification procedures that we at Kegel perform at specific events, such as measuring the topography of every lane in the bowling center, monitoring temperature, humidity, and a variety of other things.
In closing, if you are every at an event where a Kegel representative is present, please feel free to approach that individual at anytime to learn more about all of the procedures that we verify to ensure a successful event.
10 Frequently Asked Questions about Conditioning Lanes
Before making any adjustments to the conditioner pattern, make sure that your lane machine is cleaning properly.
Question: Ball reaction is weak after a game and a half. How do I reduce my carry down?
Answer: Typically the applied oil distance forward is too far creating too much conditioner towards the end of the oil pattern. Reduce the applied distance of conditioner and add to the reverse to prevent the loss of durability.
Question: Ball reaction is strong from the beginning and does not weaken making ball reaction unpredictable. How can I tame my back ends down?
Answer: First, try lengthening the pattern, one foot at a time to the desired result. Second is to change to higher speeds earlier in the pattern to raise the level of conditioner at the end of the pattern.
Question: The pattern plays good from the beginning yet loses hold through the night. How do I increase the hold?
Answer: The applied conditioner on the reverse is what creates durability, this area known as the mid-lane provides direction to the breakpoint and dictates score-ability. Starting reverse oil further down the lane increases hold.
Question: My bowler's tell me "the heads dried out". How do I control early hook?
Answer: First, watch ball reaction, bowlers rarely see what they think they see. In most cases the ball actually hooks too early through the mid-lane. Poor lane surface or lack of conditioner in the lay-down area can also be a cause. In this case, slowing the travel speed in the head area on the return will increase the amount of conditioner in this area. Adding loads in Sanction Technology along with a slower machine speed will increase skid through the heads. However, many times today with the amount of conditioner being applied to the "heads", if the ball is hooking early, there are lane surface issues.
Question: If I get the ball right, it "hangs" outside, 2,8,10 city! How do I create more room right?
Answer: This is a hard one to recognize, because it has multiple and opposite causes.
Too much conditioner on the outside (ball skids too far) or in some cases not enough conditioner on the outside (ball loses energy) can cause "hang".
If the ball skids to far, reducing the length and/or volume of the applied conditioner will help.
A wet/dry condition will result in too much skid inside, giving the appearance of "hang" and a loss of energy if the ball enters the dry too early creating a weaker back-end reaction. Many times the amount of conditioner in the middle is the cause of "hang" and not the amount on the outer boards. Reducing the amount of conditioner in the middle, raising the outside, and using speeds to lower the overall height of a pattern will increase ball reaction and create more playable angles.
Adverse lane topography can affect swing. If this is the issue, reducing the outside condition will allow bowlers to play a more direct line to the pocket.
Question: The bowlers seem to move left very quickly because the track dries up. What can I do to prevent this?
Answer: The volume at the end of the pattern should be slightly more than the outside boards. Applying oil to the track on the reverse can provide more durability without greatly affecting overall ball reaction. With Sanction Technology and board-by-board capability, widening loads one board at a time to get the desired affect can provide the quickest way and retain stability.
Question: How do I determine my cleaner ratio?
Answer: The best idea is to phone the manufacturer for their recommendation. All conditioners are different and clean off the lane differently. For example, Defense lane conditioner is usually stripped at a 4 or 5 to 1 ratio, while Offense can be cleaned at 8 or 10 to 1. This is something that you can experiment with, however, it is not recommended to weaken the stripping solution throughout the entire lane to control the back-end reaction. This can cause for poor cleaning and create numerous other issues.
(Note: With the FLEX lane machine, the ability to weaken the cleaner ratio mix ONLY on the back-end is an option to control back-end ball motion. The FLEX lane machine can keep a strong cleaner mix in the front part of the lane where it is needed.)
Question: How does temperature affect my lane conditioner and lane machine?
Answer: If you are using wick machines, it is highly recommended that you store the machine and conditioner in a place where it is room temperature and will remain constant. This will prevent inconsistent flow through the wicks due to changes in viscosity. In some conditioners, a 1-degree change in temperature can affect viscosity by 2 points cps. This is important for those with Sanction Technology to control the pressure and prevent possible damage to the gauge.
Question: Separate or Simultaneous?
Answer: This is an issue related to wick machines more so than Sanction Technology. Most centers try to reduce depletion one of two ways, either running in separate mode or stopping every so many lanes and letting the machine rest. The separate mode is recommended due to the consistent time in between the oil and strip mode. While the lane is being stripped, the wicks have that time to recover and it is the same from lane to lane. A major issue in resting the machine several times across the center is that it creates a stair step effect of gradually less, than more conditioner, repeated across the lanes.
Question: How does buffer brush wear affect my condition and what should be done upon installing a new one?
Answer: The buffer is designed to taper an oil pattern based off the pattern settings and speeds. As a buffer wears the amount of conditioner at the end of a pattern gradually diminishes over time. This is usually not something bowlers notice and will not come to your attention until you are told that you do not have "three units" any longer. Simply put the brush doesn't hold the conditioner as long as when new and "dumps" it further up lane and creates a steeper taper in the pattern. When replacing the buffer after this gradual wear and even though the pattern settings are the same as when the buffer was new, the effect of a new brush will seem dramatic to the average bowler.
It is highly recommended that this be done in August so the change is not taking place mid-season. The frequency of changing the brush is affected by many factors including number of lanes, how good the lane surface is, and what type of lane surface it is. The more friction the faster the wear. Smaller centers with 24 lanes or less may see two years between buffer changes. Centers with 24 lanes and up may change the brush every year to every six months in centers with a lot of lanes.
“The oil pattern didn’t play anything like it did at home!"
Often times I hear this comment and there are many reasons why this can happen. Frequently, the center that you are going to bowl the tournament in, say for example the USBC Open Championships, is using a different brand of cleaner, different oil, and a different lane surface, not even taking account of one of the biggest differences; topography.
Those are very obvious factors, but often people think that because they have the same lane machine as at the tournament site that it should cover all of those differences. Ultimately, even if you have the same lane surface, oil, cleaner, and lane machine, differences will still remain.
One of the differences we see often is the physical condition of the lane machine. Even though each Kegel lane machine leaves the factory meeting all of our strict adjustment and performance specifications, what happens to it from there is totally dependent on the maintenance (or lack thereof) that is given to it.
For an example, let’s compare two cars: Two 2011 Chevrolet Corvettes.
One Corvette lands in the hands of a business man who uses it strictly as a commuter car. He washes and waxes it every week, changes the oil right at 3000 miles, and always uses synthetic oil. He manages to put 25,000 miles on the car in a 12-month period.
The second Corvette ends up being a rental car. The car is in numerous drivers’ hands many of which perform routine burnouts and jackrabbit starts. This car also logs 25,000 miles in a 12-month span.
Though both of these cars started their life exactly the same, do you think both cars are going to look the same and perform the same after 12 months? Do you think the interiors are going to be the same? It wouldn’t surprise me if the rental car’s transmission doesn’t shift as crisp and probably a few of the basic items are a little more worn out (brakes, parking brake, tires, etc.) All I know is, I’ll take Corvette number 1 and you can take a chance with the rental car - haha!
Knowing this, do you think all lane machines are treated the same? We’ve seen many lane machines after one year look like they’ve never been cleaned! Oil drips out of the vacuum motor (where it never should), the transfer brush is filled with dirt and hair, the paint is peeling off due to cleaner being spilled on it numerous times, and the frame has been tweaked throwing the factory adjustments out of spec since the machine has been dropped more than a half-dozen times due to negligence.
Do you think that this machine I described above will put out the pattern the same way the brand new machines we have at the USBC Open Championships will?
Do you think the pattern will be the same with a machine that doesn’t clean the lane well because the squeegee blades or cushion roller have never been changed?
Do you think the pattern will be the same even if the cleaner tank filter is clogged and the Norprene cleaner tubing hasn’t been changed in over a year which results in half the amount of cleaner coming out (resulting in poor cleaning) and now you’re oiling on top of a film?
Do you think the pattern will be the same even if the transfer brush has so much dirt in it that it keeps the oil in the transfer brush an extra 6 feet down the lane?
Many factors will make a pattern play different from center to center but often one of the biggest is the physical condition of the machine itself. Stay up with the maintenance of the parts that commonly wear out; squeegee blades, buffer brush, cushion rollers, etc., keep the machine clean, and your lane condition will be more consistent from week-to-week and month-to-month.
Like our VP of R&D Mark Davis once said: “Machines that look like new, tend to perform like new.”
What does “Non-Newtonian” really mean when it comes to bowling lane conditioners?
So, you know that non-Newtonian liquids are just like ketchup; you have to apply some force to make the liquid flow. But, what does “non-Newtonian” really mean?
You’ve likely heard of the English mathematician and physicist, Sir Isaac Newton. He is, after all, one of the most influential scientists of all time. He formulated the laws of motion and universal gravitation, laid the foundations of classical mechanics, and had a hand in developing calculus. He even did a lot of work in optics and built the first practical reflecting telescope!
Newton developed several scientific laws that described the relationship between forces, bodies, motion, and responses. You probably studied his three laws of motion in high school physics. You may have even studied Newton’s law of viscosity in school; though you may not have realized it!
Newton’s law of viscosity isn’t a fundamental law of nature (like the laws of motion or gravity). Rather, it is a relationship between two physical quantities; in this case, viscosity and force (called shear). When viscosity doesn’t change no matter how much force is applied; i.e. when viscosity is independent of shear; you have a Newtonian fluid. Most fluids are Newtonian and the most common one is water. Under normal conditions, the viscosity of water doesn’t change no matter how much force; or shear; is applied.
There are different kinds of non-Newtonian fluids; shear-thinning and shear-thickening are two of the more common kinds. The viscosity of these fluids will change depending on the amount of force that is applied. A shear-thinning fluid will experience a decrease in viscosity with more applied force while a shear-thickening fluid will experience an increase in viscosity with more applied force.
Ketchup is the perfect example of a non-Newtonian, shear-thinning fluid. You can turn the bottle upside down and wait for the ketchup to flow and it just never seems to happen. Give the bottle a couple of solid taps on the palm of your hand though, and the ketchup starts to ooze out of the bottle. The force applied to the bottle caused the viscosity of the ketchup to decrease (the ketchup became thinner) enough so that the ketchup would flow from the bottle. Once a force is no longer being applied; i.e. the ketchup is on the plate; the ketchup returns to its original viscosity and sits in a blob on the plate.
All that is cool, but how does this relate to lane conditioners?
Well, with a non-Newtonian conditioner, each bowler will see slight variations in ball motion. For example, a high-rev, high-speed player; here’s looking at you, cranker; will apply a lot of force to the conditioner. As such, the shear applied to the conditioner will cause the viscosity of the conditioner to decrease. This will allow the player to see a little more push; the ball will skid where it needs to skid. A low-rev, low-speed player; that’s all you strokers out there; will apply a lot less force to the conditioner. The shear applied to the conditioner won’t cause as much of a decrease in viscosity as the cranker saw. As such, the stroker will see a little more friction so the ball will read and pick-up where it needs to pick-up. In simpler terms, the stroker will see “good friction” while the cranker will see a little more slickness.
Of course, this is all on a very small scale. A 200 rev rate bowler might “see” the viscosity as 70 cps while a 500 rev rate bowler might “see” the viscosity as 65 cps. In the scheme of viscosity, 5 cps is very small. So, what the ball; and the bowler; see is very subtle. But, it’s just enough to help all bowlers find good ball reaction.
Learn more about Kegel’s non-Newtonian Lane Conditioner, Terrain.
The Use of Poseable Mannequins During Bowling Motor Skill Training
Originally published in Bowling This Month
All athletes go through several stages during the process of motor skills training.
During the first stage, the athlete must be given all the information needed to form an image of the movement being practiced in his or her mind.
The next stage is when the athlete starts to master the new movement. This stage is characterized by the conscious control of all actions, slow movements, a significant amount of errors, and being easily distracted by external or internal stimuli.
The final stage of skill mastery is evident when the athlete starts performing movements automatically, without conscious control, using an optimal rate of movement, with an error rate that is trending to zero, and has a stable resistance to external or internal distractions.
Forming the image of the skill in the mind
The role of the first stage of mastering a skill is often underestimated. It is critical that the information be delivered in a way that is accessible and understandable to the student so that they can form the correct image of movement within their mind. In my observations, sometimes 15 minutes effectively spent at this stage can save dozens of hours of training in the later stages of mastering a skill.
This important first stage will be discussed in this article, and I will include my experience with optimizing this process. Future articles will cover the next two stages.
Methods of image formation
As a coach, one must use all possible channels of education to help the athlete create the correct execution of the skill within their minds. The visual, auditory, and kinesthetic learning modalities should be used effectively as needed for each student. In general, the effectiveness of training will increase significantly when a combination of these modalities is utilized.
In fact, the uptake rate and quality of understanding increase dramatically when combining all three perception channels. Research has shown that when using just auditory or visual channels separately, only 10% of new information is absorbed. The combination of audio and video helps to increase the uptake level to 50%. Adding the kinesthetic channel to the other two provides an optimal rate of 90% of new information being understood. Thus, the integrated approach of using all three learning modalities is the most efficient. Of course, the coach needs to recognize and take advantage of the athlete’s dominant channel of perception.
During the initial stage of skill training, it is necessary to create a complete field of information for a given skill set.
During the later stages of skill encoding, the most efficient implementation is to work with the channel of perception which “delivers” information in the form closest to the type and kind of thinking directly involved in the learning process and the implementation of a given skill. For example, when mastering a skill that predominantly uses spatial and visual thinking, it is usually most efficient to use the visual channel as the dominant one and the others as complementary. Or, if the proprioceptive senses are mostly involved, it is recommended to use the kinesthetic channel of perception as the dominant one and the other channels as complementary.
The critical role of spatial and visual thinking in bowling skill-building
Spatial thinking is an activity that helps the athlete create mental images which they can adapt to solve practical and theoretical problems. Following this definition, we understand that it is this kind of thinking that is dominant when we are teaching and training different skills in bowling. A well-developed sense of spatial thinking will greatly enhance the bowler’s ability to learn and understand many physical and analytical skills related to bowling.
In the bowling alley, where in addition to a good technical throw, the player is required to understand motion phase analysis of the ball along it’s path (skid, hook, and roll), changes in the oil pattern, types of pin action, and much more. In virtually all stages of the training process, spatial and visual thinking modalities are absolutely essential tools for a player’s success. Equally important is the development and the effective use of these kinds of learning modalities for the coach’s success in training their athletes.
Spatial and visual thinking in forming motor imagery
Spatial and visual thinking allows a player to simultaneously work on understanding technical elements of the physical game as well as forming motor imagery in the player’s mind (i.e. it can be used as the first stage of motor skill formation). Some elements of this technique are similar to the motor imagery practice, but it is simpler to use and does not require special training.
We must simplify the process of mentally visualizing a technique to the point that the player can easily press “play” in their mind in order to see the technique played out. The creation of a mental image of a practiced movement is a prerequisite for its further improvement. The rate of a player’s improvement depends largely on the degree of detail and accuracy given to this mental imagery. Plus, fine motor skills will be used to develop such thinking skills as reaction time, attention, coordination, imagination, observation, and visual and motor memory.
For using this training method, three things are needed: a video of a student’s shot, a video of an equivalent master’s shot (i.e. a bowler with similar physical and mental traits to the student), and a 12 inch tall mannequin, such as one used by art students and sold in stores like IKEA, Hobby Lobby, Michael’s, etc. Examples of the type of mannequins which are effective for this type of training are shown below.
A small artist’s mannequin can be used to demonstrate physical poses during training.
The coach and the student view the video of the student’s shot and discuss the technical elements which are to be worked on.
The coach and the student view the video of the equivalent master shot and, once again, discuss the technical elements.
Using the mannequin, create images of the necessary technical elements.
Set the mannequin in the approach area of a lane or on the layout of a bowling lane for a more complete and correct understanding of the player’s position in the space.
At the end of the process, ask the student to mentally reproduce all the movements in sequence.
The mannequin can be used both on-lane and on top of a bowling lane overlay, such as the clipboard overlay shown.
After a while, your students will be able to easily adjust the image of the necessary technical elements in full, and “play” it at will in their imagination. This method is especially effective for young players.
Use of the mannequin during training sessions involving young bowlers is especially effective.
Often, this method of training is not only useful, but it is also is a lot of fun. Give it a try in your own coaching sessions and see for yourself!
Jedi Bowling: Line-of-sight construction skill and the methods of its training
Originally published in Bowling This Month
“Skill” is the ability to carry out an action automatically without active conscious control. An indicator of skill competence is performance of an action without the need to consciously think about how the action will be performed. When a person has skill competence for a given task, it is no longer necessary to think about the execution of the skill via its separate partial sub-operations.
Successful bowling, of course, requires competence in countless complex skills. One of the many jobs of the bowling coach is to develop and use the most effective methods of skill training on our students so that their learning processes can be accelerated as much as possible.
In this article, I want to analyze the process of learning and the implementation of one specific bowling game skill. Namely, we will examine the line-of-sight construction skill of the bowler. Line-of-sight construction is a skill that allows the bowler to envision the launch trajectory of the bowling ball on the lane. We’ll start with some background and with a description of why this skill (as well as other similar skills) can be so challenging to teach. Finally, we will give an example of a new method of line-of-sight training that I’ve been using successfully with my own students to accelerate their development.
Background and motivations
Throughout my career as a bowling coach, I’ve had the opportunity to work with a wide variety of bowlers. This includes players at the novice level all the way up to the national team level.
Additionally, I have a significant amount of experience coaching deaf bowlers. One of my students is a medalist in the Deaflympics and numerous of my other deaf students are European Bowling Championship winners. Recently, one of my female deaf students won a Gold medal at the 3rd World Deaf Bowling Championships in Bologna, Italy in August 2015.
Working with bowlers who have different types of thinking skills has motivated me to seek out improved teaching methodologies for our sport. The task of building an efficient training process for deaf bowlers, for example, has been very non-trivial. This led me to deeply analyze the process of bowling skill learning from the perspectives of cognitive and educational psychology.
This process uncovered psychological regularities of the bowling training process. Developing an understanding of these regularities has resulted in me adjusting my training methods for improved efficiency. This has led to significant accelerations in skill mastery for players of all types.
Line-of-sight construction is one particular bowling skill that can be challenging to teach to both deaf bowlers and many non-deaf bowlers alike. Let’s start by taking a close look at this skill and the current methods of its teaching.
Line-of-sight construction: one of bowling’s fundamental skills
Bowling is a complex skill that involves perceptual, intellectual, and motor abilities of the player. In these ways, it is quite similar to other complex skills, such as learning to control an aircraft, for example. The ability to:
construct motion paths,
control physical efforts,
feel position in space,
make quick decisions about the current situation,
perform standard operations, and
know and apply correctly a set of rules
All are features of both bowling and controlling an aircraft. Many complex activities in a wide variety of disciplines share these same characteristics.
In bowling, line-of-sight construction is an important skill related to targeting that must be developed by bowlers of all levels. This skill is chosen as an illustration due to its importance in the overall structure of the bowling training process.
The ability to envision the line-of-sight on the lane, to keep it in the mind during the bowling approach, and to subsequently analyze the delivery with respect to the line-of-sight allows the bowler to effectively solve a wide range of tasks, such as:
positioning himself in space and correctly performing the physical game elements relative to the given line;
making a correct analysis of the accuracy of a delivery and of the dynamic characteristics of the ball motion on the lane;
making decisions on the necessary changes in ball trajectory and then rapidly implement them;
and much more!
Thus, the described skill of line-of-sight construction is one of the basic skills of our sport. The degree of its mastery defines the speed of a player successfully training the rest of the skills of bowling. It can be an indicator of his success as a whole on the lanes. In fact, the development of this skill is one of the first tasks facing a coach while training a new player in our sport.
Bowler skill level vs. line-of-sight construction skill mastery level
While preparing this article, I have performed testing of bowling players on their mastery of line-of-sight construction skill and found correlations between the players’ success on the lanes and the extent to which they’ve mastered this skill. Here are some brief details of the results of this study:
Entry-level bowlers: Often cannot imagine and describe in words the ball trajectory on the lane; are not visually concentrating on the point of sight during delivery preparation and execution; often use hitting the pins as an accuracy criterion; have no clear image of the line-of-sight.
Mid-level bowlers: Can describe in words the ball trajectory on the lane; are concentrated on the point of sight (sometimes excessively) during delivery preparation and execution; use assessment of hitting the point of sight as an accuracy criterion; the line-of-sight image is in the forming stage.
Advanced bowlers: Can describe the ball trajectory with precise detail in any area of the lane; are concentrated on the line-of-sight duringdelivery preparation and execution, with the ability to change the visual concentration to various points of sight along the line; use assessment of hitting the line-of-sight as an accuracy criterion detailed in various zones of the lane; the image of the line of sight is clearly formed in the visual imagination of the player and is used with no effort during delivery preparation and execution.
As the results of this test show, there is significant correlation between overall bowler skill level and line-of-sight construction skill level.
Current methods of line-of-sight skill training
All existing targeting systems in bowling are built on the principle of line-of-sight construction on the lane. Differences in targeting systems are only in using different markers as the coordinate system for the line of throw construction (targets, pins, breakpoints, exit points, laydown points, starting position of the player, and so on). The final aim of all systems is a line construction on the lane surface and in the approach area.
Operating with initial data in accordance with the theory of the throw line construction voiced by the coach, the player must use abstract logical, spatial, and visual imagination to construct the throw line on the lane and in the approach area. The player must then hold his concentration to perform a delivery, controlling his own movements and the subsequent movement of the ball relative to this imagined line.
If it is necessary to change the ball trajectory, the player (using information provided by the coach) must recalculate the coordinates of the required markers and construct a new line. This is not an easy task. The main problem is in the constant interaction of abstract logical and visual representation types of thinking.
Even when a player is given initial information in the form of visual images and tips from his coach, the transfer of these images to the real lane is always performed in the mind of the player. In such a case, it is impossible to avoid the process of personal interpretation.
Solving this problem, we are increasingly becoming dependent on the features and level of a player’s abstract logical thinking and the abilities of his mental apparatus regarding the interpretation and transferring of the abstract logical concepts into symbols and images used by visual and representation thinking.
If the player is talented in this respect, we get the correct image in his mind and we get it very rapidly. For other players, perhaps even those who are more gifted in physical and coordination abilities, this task may be very difficult. It may either take a long time to perform, or it may not even be solved at all.
“So what?” you might object to me. “Successful bowling is about survival of the fittest; the most talented players will succeed and thrive!”
In my opinion, the difficulty of solving this problem for the player is not so much due to the level of the player’s ability. Instead, the difficulty is caused by the method of supplying the initial information and the proposed algorithms of solution. Too large of a role of abstract and logical thinking in the described processes can be destructive.
We as bowling coaches are a lot like a teacher who tries to solve the problem of constructing and fixing in a pupil’s visual memory the image of a 90 degree angle. Doing this using only a verbal description is quite difficult. Even if the teacher is permitted to draw two randomly-arranged straight line segments and then explain in words how to form a 90 degree angle from them, it is still an incredibly difficult task.
Alternatively, just draw two perpendicular lines, show the angle, and then add any verbal description for better understanding. The result is instant and the student immediately understands the concept of a 90 degree angle!
A proposed new technique for bowling line-of-sight construction training
I will now introduce a new method of line-of-sight construction training that I have used with great success with many of my students. The method involves using a device to create and consolidate in the spatial and visual imagination and in the memory of the player a bright image of the line-of-sight in the real playing environment during delivery preparation and execution.
While training using this device, there is no need to describe the line image using objects of abstract logical thinking, and, as a consequence, there is no need for any interpretation by the player.
This patent-pending device utilizes a luminous bar (3 to 5 meters high) installed above the lane in a vertical position. Depending on the particular training task, it can be installed in the targeting area, at the exit point, at the breakpoint, or as close as possible to pins. Reflection of this bar creates a bright and clearly visible image of the line-of-sight on the lane. This bright reflected line on the lane is used to train and consolidate the required skill of constructing the line-of-sight by the bowler.
Lighted bar, installed in the breakpoint zone
The property of the reflected line to change its position while the player moves left and right, as well as the possibility to change the initial position of the device, allows the bowler to almost intuitively understand the process of adjusting the line position on the lane.
Since this training technique so directly demonstrates the concept of line-of-sight and its fundamental properties, it is even effective on players who haven’t yet developed advanced abstract logical thinking abilities, such as children.
Here, the lighted bar is installed at the arrow zone for the purposes of 3-6-9 training.
Besides the basic training function of teaching a bowler how to construct the line-of-sight, use of this device has generated four important additional benefits:
Hitting or nearly hitting the line visible by the player is only possible with correct technical throw execution.
The possibility to assess visually the dynamics of the line-of-sight movement along the lane by the player during the delivery creates conditions for more effective correction and monitoring of the spatial and technical elements of the approach. This creates a very effective instant feedback system for the bowler.
It becomes possible to see a diagram of oil application on the lane and its variations, because due to different oil amounts in different areas of the lane, the reflection coefficient of the light source varies. As a result, the thickness of the oil in different zones and the dynamics of its changes during play become visible to the bowler.
The reflected light line creates the possibility of performing a visual assessment of lane topography. The curvature of the reflected line shows the deviation of the lane plane from the horizontal plane.
Here are some additional videos of the lighted bar in use during training, both as viewed from the coach’s position behind the approach and as viewed through the eyes of the bowler.
Results
The practical use of this technique has shown that it has high efficiency. The image of the line-of-sight is quickly fixed in the visual memory of the player. After just a few training deliveries, it is not difficult for most players to use this image, even in the absence of the training device.
Mastering the line-of-sight construction skill has become much faster. Testing has shown that the time duration of mastering this important skill is reduced significantly (sometimes by an order of magnitude) through the use of this device and this training method. Additionally, the skill is successfully mastered by players regardless of the development of their abstract logical and visual representation thinking.
Often, after a month of training using this technique, entry-level players show a skill mastery level comparable to that of advanced players. This allows them to progress more quickly in their future training.
Practical considerations and next steps
Some of you might be wondering about the practicality of the above-described training method. It is true that it does require some special equipment. Also, like all things that happen beyond the foul line, use of such equipment requires agreement and cooperation with the bowling center owner.
As of now, there is no commercially-available “off-the-shelf” luminous bar line-of-sight training system. However, it is a fairly simple design that can be constructed from components that are readily available. It can be installed on the lane in about five minutes and removed in three minutes. Also, I have built and used a version of this system that is fully portable. Development of a ready-made system that can be purchased by coaches is a possibility for the future.
Conclusions
I hope you have enjoyed this introduction to some of the challenges in bowling skill training and that I have opened your eyes to the opportunities that exist in developing more efficient training methods for our sport. As previously mentioned, I have studied the theory of effective learning and skill development for bowling extensively. I have many other ideas in different areas of bowling skill development, such as timing training, swing direction training, ball reaction understanding, and more. I hope to share them with you in upcoming articles.
Finally, I welcome your questions, comments, and suggestions, as they will be very beneficial in helping me decide on content for future contributions.
Entry Angle Assessment
Originally published in Bowling This Month - February 2016
In modern bowling, a player’s success depends on the implementation of numerous components: throw execution, ability to measure the characteristics of ball motion, mental and psychological preparedness, and much more. In this article, I want to share my experience in teaching the skill of determining the bowling ball’s entry angle. Mastering this skill allows the player to quantitatively assess one of the major characteristics of ball motion and enables deliberate correction of numerous game components.
In this skill, as well as the line-of-sight construction skill (described in my previous article), visual and spatial thinking are critical. We have to pay the most attention to these types of thinking when learning and using both line-of-sight construction and entry angle assessment skills. When testing players at different levels, most players, including advanced ones, could not determine the value of their ball’s entry angle. In the majority of cases, they could provide only a simple and ambiguous description, such as small, large, insufficient, bad, too much, etc.
This is not surprising, since very few players have had the opportunity to assess this parameter using the currently-available technical feedback systems that provide entry angle data (such as CATS and others). In practice, the skill of entry angle determination is almost always developed over many years of training and long tournament practice. On the other hand, applying the training methods described below, it is possible to obtain improved results in significantly less time, wherein players, using their spatial and visual thinking and memory, are able to determine the entry angle quantitatively using a range from 3 to 6 degrees.
When we evaluate trajectory accuracy characteristics, the lane markings (counting of boards and/or targets) allow us to see and quantitatively assess the ball’s lateral position in different parts of the lane (target area, breakpoint area, position of the ball at pin contact, etc.). This allows us to literally name the number of a board on which the ball is positioned at any given point along its trajectory. For example, when we need to draw the line-of-sight, we can use readily visible marks, such as targets, pins, dots, etc. In contrast, it is difficult to determine the entry angle on the lane due to the absence of readily visible and memorable orienting points.
Laser line projection
To overcome this lack of orienting points, the student first and foremost needs to be shown the image of the entry angle line on the lane and how the entry angle is determined. For this purpose, a special line laser can be used to “draw” the entry angle line on the lane.
An entry angle line of 5 degrees “drawn” onto the lane with a green line laser.
During the initial training phase, it is important that the student does not focus on the entry angle value. It is most important for the student to see the image of the entry angle line on the lane and memorize that image. A good starting point is to mark the angle at 4 degrees and ask the player how the entry angle of his throw differed from the visible one on the lane.
A powerful memorization technique is for the coach to quickly move the visible entry angle line to reflect the characteristics of the specific player’s throw in order for the ball to pass along the visible line as often as possible. Thus, the player will quickly learn to determine the presence or absence of ball roll as well as the length of the ball roll. This is a very important and useful intermediate skill!
Editor’s note
Laser setup example
The laser line in the above image was generated using a standard off-the-shelf 350 mW green laser pointer in conjunction with an off-the-shelf line lens kit, with the laser mounted on a tripod, as shown.
Please be advised that lasers can be dangerous. A 350 mW laser is a Class 3B laser device which can cause harm if used improperly. Among other risks, never look directly into the beam of a laser and never point a laser beam at a person. Never use a laser unless you are properly trained and understand all the possible risks. Also, please keep in mind that the sale and use of lasers can sometimes be subject to government regulations.
It doesn’t take long for the student to memorize the entry angle image when using a bright and memorable laser line. Once the player fully understands these concepts, the next step is to learn how this line ties into a coordinate system which provides the framework to make the necessary quantitative assessment to determine the angle value correctly in the absence of the laser line. There are two very helpful methods for this purpose.
Intervals
The first one is the method of intervals. With this method, the player is taught to quickly analyze and determine various lengths on the lane correctly. In principle, this skill is very important for understating ball reaction.
The goal is for the student to memorize the most important intervals on a lane, including 30 feet, 35 feet, 40 feet, 45 feet, and 50 feet. We approach this task by placing memorable marks, such as paper taped in the gutter, at the desired length or lengths.
An example of using paper markers in the gutter to show the location of specific distances.
An example of using paper markers in the gutter to show the location of specific distance. Of course, this is assuming that the player understands basic lane geometry (such as the width of lane, the distance to the targets and pins, etc.), since memorizing the desired unmarked points requires that the student use all available visual cues. For instance, the 1st pin (at 60 feet) has a reflection that can either correspond to or be very close to one of the desired intervals (50 feet for a taller person, down to 45 feet for a shorter person). Determine what interval the bowler sees and use it.
It is important to understand that the intervals are determined by the individual’s unique characteristics, since they are connected with the player’s height and the height of his eyes in the initial and finish positions. To begin with, focus on memorizing the required intervals from the player’s finish position, as it is critical to choose a consistent and repeatable position from which to memorize visual cues. Moreover, this is yet another argument for the benefit of a stable and proper finish position. Obtaining visual information after releasing the ball from the foul line is facilitated by correct and consistent technical execution.
For entry angle determination, memorizing just the two lengths of 30 feet (half the distance from the foul line to the first pin – 1/2 of the lane) and 45 feet (half the distance from the 30 feet mark to the first pin – 3/4 of the lane) is enough. It is easiest to start by memorizing the 30 feet mark and then later adding the 45 feet mark. Once the student has memorized these intervals, the next training session can focus on learning how these lengths relate to the two entry angles of 3 degrees and 5 degrees.
Ideally, using two laser lines, the coach should indicate the 3 degree line extending from 31 feet to the pocket and the 5 degree line from 42.5 feet to the pocket. Remembering the memorized visual cues for 30 and 45 feet, the student can simply add 1 foot for the 3 degree line and subtract 2.5 feet for the 5 degree line in order to commit these angles to memory.
In order to achieve different entry angles, balls and throw execution parameters (speed of throw, axis tilt, ball trajectory, etc.) can be changed. The table below shows the entry angle which corresponds to the given length of the lane edge from the foul line.
Angle vs. distance for a line drawn from the gutter edge to the pocket.
At this point, the student has learned a significant and complex skill set: a practical understanding of the detailed range of his ball arsenal and the effect of changing throw characteristics on the ball trajectory.
The use of a device for marking the aiming line, described in my previous article, in combination with marking the entry angle line(s), is an efficient technique for teaching the player to consolidate these skills.
Retinal angle assessment
For further consolidation of this newly acquired skill, there is another approach to memorizing the entry angles that a player sees. Have you ever asked a beginning student or spectator about the entry angle value they perceive? The answer is consistently 45 degrees. This is accurate if the angle is assessed as obtained by the retina at the foul line. It matches the angle measured on video or photos.
A bowler’s perception of entry angle is typically very large (shown from a height of 4.5 feet at the foul line).
Retinal angle assessment can be used to obtain the true angle. In order to do this, the coach must determine the characteristics of the player that will influence their perception of the entry angle. The table below shows the height of the player’s eyes at the finish position which corresponds to their perception of 3 degrees and 5 degrees.
Entry angle perception (retinal angle) from the bowler’s perspective vs. height.
In applying this assessment method, the difference between these two angles (3 degrees and 5 degrees) as viewed by the bowler is approximately 15 degrees. For example, if the height of the eye is 1.6 meters (5.3 feet), the angle of 3 degrees is perceived as 31 degrees and the angle of 5 degrees as 45 degrees. These angles are fairly easy to remember. Simply measure the height of the player’s eyes at the finish position and print the respective angles for memorization.
Finally, once the player has fully understood the entry angles of 3 degrees and 5 degrees, he can extrapolate from there to additional angles. For instance, knowing 3 degrees and 5 degrees, the player can easily see when the ball’s trajectory is between these memorized points and determine the angle to be 4 degrees. Equally an angle less than 3 degrees would be 2 degrees or slightly more than 5 degrees is 6 degrees. The ability of the player to determine the range of angles helps him assess the situation on the lane and ultimately provides the tools to consistently obtain the ideal entry angle during competition.
Changing Lanes
With the invention of the Kegel LaneMapper, came a study about bowling lane topography like no other in the history of the game. Truth be told, when lanes were made of wood, and resurfaced in a timely manner and taken care of by craftsmen, topography was not really an issue. But with the proliferation of synthetic lanes and overlays, along with lanes getting minimal attention today, topography is much different and more influential than in past times – and the Kegel LaneMapper has been able to show it.
We now know what lanes shapes favor different type ball rolls. We know exactly why the same oil pattern can play completely different from one center to another. We know that different lane shapes can affect the durability of an oil pattern, or lane conditioner. And we know that different types of lane constructions are not created equal, nor do they change equally. It’s within this last statement this edition of the Inside Line will focus on – how synthetic panels laid on top of wood lanes can change with seasonal changes.
“All lanes look flat, but they really aren’t.”
We’ve always known that wood lanes change from summer to winter. In the days of regularly resurfaced and maintained wood lanes, we saw depressions go from the minus .010” range to maybe the minus .020” to .030” range in the winter months – a depression increase of 10 to 20 thousands of an inch. In climates where seasonal changes and humidity differences were greater, so were the changes in the lanes.
But today, because of the aforementioned lack of attention lanes receive, we are seeing changes much greater from season to season - especially in climates that have greater seasonal differences.
A big part of Kegel's original Mission Statement was “we study the game of bowling”. It was a mandate from the late John Davis. This edition of the Inside Line will focus on some of that study from bowling centers around the world, and we will show how much, and how fast, bowling lanes with synthetic overlays can change in shape.
Real World
Our first example is from a bowling center located in the northern hemisphere. Being in the north, there can be significant differences in humidity from summer to winter - it is humidity that makes wood change in shape.
The graphic below is a lane with a synthetic panel on top of existing wood lane (overlay) in the summer time when the humidity is highest. Humidity always enters wood in the area of least resistance and with a wood lane humidity enters the wood from the bottom of the lane.
Synthetic overlay measured in August when humidity is high.
We call this a ‘bird wing’ shaped lane because the wood lane pushes the panel up between the screw rows (2L, 20C, and 2R boards) causing a hill around the 10 board. This lane shape will cause hang spots outside of second arrow, and “hook” inside of second arrow. Medium length patterns are most difficult on this lane shape.
The wood lane underneath the synthetic panel "pushes up" the panel between the screw rows causing the shape of the lane to resemble a bird wing.
What is also interesting is the lanes in this center pass the plus/minus .040” specification at every distance on the lane, in the summer time.
The below graphic shows what the lane looks like during the transition from summer to winter, or winter to summer. In the fall time, the humidity has decreased causing the moisture in the wood lane to also decrease - everything is contracting and the panel takes shape of what’s underneath it. In the spring time the process is reversed. Medium oil patterns begin to play easier - actually all oil patterns begin to play easier.
As the humidity begins to lower, the moisture in the wood lane begins to release, making the wood lane contract. Measurements taken in early November.
Where the lane gets the most abuse, the head area, the depressions begin to exceed the minus .040” specification. The toe screws holding the wood lane together, and the screws that hold the wood lane to the levelers below, are getting loose, or back out all together in many instances. The lane acts like an accordion.
It must be noted that when the heads are cut out and replaced with a substrate like MDF, we do not see these huge depressions. Synthetic panels on top of a substrate like MDF, HDF, or PSL, do not seem to be affected near as much during seasonal changes.
Below is what the above lane looks like in the winter time, when the humidity is lowest. In some instances, bowling centers may even turn the heat on, which lowers humidity even more. It's at this point in the year most of the moisture has come out of the wood lane and the depressions are the greatest. This is also when oil patterns tend to play the easiest; everything “ramps back” to the pocket.
When the humidity is the lowest, the depressions increase the most.
What may be thought provoking for some is, every distance on this lane has now exceeded the minus .040” specification. We have seen this in more than a few instances.
Oil patterns on a lane with depressions of this magnitude will also tend to break down quicker, when playing outside of center. This happens because there is more pressure (gravity) pushing up against the ball when outside of center so it's easier for the ball to "poke through" the oil film on the lane - the “shot” will tend to go inside quickly because of that. Think of a car rounding a curve on a banked road or race track - the banking is there to help a car navigate the turn.
This is when lofting the gutter often comes into play on competitive longer patterns - the ball will “see the lane quicker” as the pattern breaks down on the uphill slope. So players quickly move to and play the downhill side of the depression as long as they can. Physics dictates that the ball will retain energy longer on the downhill side of depression and then hook off of the uphill side easier. Once deep inside, bowlers with high rev rates, high axis rotations, and high tilts will benefit the most on this lane shape - that's physics at work also.
The Kegel Slope Graphs make the slope differences even more apparent:
Same lane over the coarse of seasonal changes.
The Slope Graphs are revolutionary in bowling because they are the first illustrations that show the severity of the ‘rise and falls’ on a bowling lane. Slopes to the right are in the blue color spectrum – the darker the color the more severe the slope to the right. Slopes to the left are in the orange/red spectrum - the darker the color the more severe the slope to the left. Read more about Kegel's Slope Graphs.
How fast can lanes change?
The following graphic shows how a synthetic overlay pair of lanes can change over the course of 28 days – from May 17th to June 13th. This center is also in the northern part of a country and one floor below ground level – so if anything changes are less than a center on the ground floor or above. The foul line is at the bottom of the graphic.
A pair of synthetic lanes with overlays changing during a 28 day period - from May to June. The foul line is at the bottom,
What to notice here are the slopes on the outside part of the lanes – reds on the right are slopes towards center and blues on the left are slope towards center - so the lanes here are predominantly depressed at the beginning of this time frame.
Over the course of 28 days it is clear that the depressions are decreasing. The reds become lighter in color so the movement towards center is less influential, and some areas of the lane are even turning to blue in color, which indicate slopes to the right. Hang spots are caused by these "outward slopes". What we noticed during these 28 days was "the oil pattern" became tougher as the lanes flattened out - gravity always wins on planet earth.
If we talk about the raw data, the lanes were changing (swelling up) about 6-7 thousands of an inch per week as it takes in moisture. In 28 days the depressions went from the mid-minus 30 thousands of an inch to less than 10 thousands of an inch. And the process will reverse itself come fall time as the wood releases all that moisture.
“Gravity always wins on planet earth.”
How this can help you – the proprietor, the bowler, the coach, the federation, or the tournament organizer.
With synthetic lanes it’s even more crucial to see these slopes because it’s the only way we can really understand what’s happening with ball motion – is it friction or a significant slope causing the ball to hook too much, or not enough?
Knowing the shape of the lane at different times of the year will tell you the answer, and it will also tell you how an oil pattern will play, develop, and breakdown.
For instance; when the wood underneath the synthetic swells up in the summer your pattern will play longer or it seems like carrydown comes out of nowhere – the ball has a hard time moving towards center, when the lane is sloped towards the gutter.
This lane swelling can also "make the shot" go more inside as bowlers stay away from the hang area towards the outsides.
This is especially important to any one bowling center when trying to provide lane conditions for their weekly league customer base. If your center has lanes that change as much as these examples, you may need different house patterns for different times of the year so the house playing characteristics stay more similar.
It’s also important to know if a bowling center wants to “experiment” with a different oil pattern or try a new chemical product. If you don't which way your lanes are changing, or how much, it will be difficult to know why things are playing the way they are.
It’s important for tournament organizers or federations to know so when they ask for a pattern months in advance they have a better idea of what to expect come tournament time. Testing an oil pattern in one part of the year and expecting things to play the same at another time of year will often make the question "what happened" arise.
It’s important for coaches and bowlers so they can properly prepare for an upcoming tournament, or make the proper adjustments when the bowling ball is not reacting like they think it should.
Technology can definitely make life easier when used in the proper manner – the Kegel LaneMapper is one of those advances.
When used it can definitely help a bowling center get know their lanes better and use oil patterns that compliment the predominant shape of those lanes to provide more consistent playing conditions for their customers.
Or better yet, the LaneMapper can tell you where and how to correct your lanes if needed so they are "fair" for as many styles as possible.
In a game like bowling, providing equal opportunity for as many different playing styles as possible should be the goal. It worked before and although history may not always repeat itself, it sure does rhyme.