For pool....
I think that the best three things you can do to play the game at a high level are...
1) learn some fundamentals, and focus on getting a repeatable consistent stroke..
2) learn to let the weight of the cue do the work....
3) Learn BHE.... In order for most people to use BHE, they need a conventional shaft to avoid having a super long bridge...
Most people don't want to learn the game... Most people want to go under the assumption that they are naturally talented and don't need to learn the game...
In almost no cases is this really true...
Most of the people that this appears to be true with, or even if they believe it to be true themselves, if you dig deep you'll find that they usually had a world class mentor at an early age, when our psyche and physiology is wired to absorb information and learn new skills. Combine that with a naturally high level of hand/eye and visual spatial acuity and you'll have a top notch pool player that appears to just have had natural talent..
LD shafts, aiming systems, banking and kicking systems are not for these people....
They are designed for every day players to achieve their highest level of play as quickly and easily as possible.
You'll have three different types of pros and two will sometimes comment on this.
You'll have the pro that thinks they got there on their own natural talent who thinks that no one can get as good as they are without that same talent.
You'll have the pro who knows and at least USED the knowledge and the systems in the past to get where they are through hard work and LOTS of practice who won't comment on it...
The you'll have the contractually obligated pro who may or may not use the systems and tech but will comment on it out of contractual obligation...
Now I use the term pro here loosely, it's really any high level player...
Who cares if someone knocks or doesn't knock a particular product or system????
Choose who you're going to trust and most importantly trust your own experience based on your level of play...
I'm sorry, if you're a three in the apa, you might want to take the advice of a BCA master instructor over your own, and over even that naturally talented person who plays phenomenally.
Hell, you might want to even take the word of the guy who turned a non player into an APA 7/9 in 15 months... but I don't want to toot my own horn too much.
JAden