Went with a friend of mine to a place in Scottsdale called RoboGolf.
They hooked him up to a robot that forced him to make a perfect golf swing so he could feel what one felt like.
Looks like a similar machine would work for a pool stroke. Not so sure about aiming?
Bill S.
I think the only problem I see with that is, not every person has the same body type, build, flexibility, strength, so not everybody can achieve the same prototypical robot swing. Ironically I am a disciple of the legendary golf instructor and long-ball hitter Mike Austin, whose teachings were pretty controversial and counter to what the "modern" Hogan-style swing is taught; but nowadays more of Austin's teachings are finding its way into golf instruction.
I was advocating the use of some 6" length of 3/4" ID PVC pipe, propped on wood blocks, or erasers, or whatever, that could help groove a straight stroke. Leafing through some billiard mags I had from over 20 years ago, I realized Buddy Hall had already invented it. Don't know if they're still for sale. His maybe slightly better because of the clear tube and plastic standoffs. But it works regardless of build;