When we were in London I shared an apartment with Johnny Archer - we spent every night talking about the next day's strategy AND professional pool techniques. We share many of the same philosophies about competition, such as lowering expectations and raising preparation....also it was his physical knowledge of the game that impressed me and provided me proven insight from one of the all time greats.
I ask him what he did to prepare his stroke for a tournament and he said "I practice what's necessary to make sure I'm completing my backswing".... I immediately could relate, one of my first mentors, "Omaha John" would take the cue back almost out of his fingers....and many of the greatest players I've seen make the tip disappear at the transition point of their backswing.
Playing pool at the highest levels has many exceptions to what's commonly taught. One of these "commonly taught words of wisdumb" is to extend your follow through and limit your backswing..... many champions do is the opposite, they extend their backswing and limit their follow through although this may be disguised at times (I'll explain this at another time).
'The Game is the Teacher'
"in pocket billiards, if it feels right, it's probably wrong" - The Game is the Teacher'