I think follow through is definitely important. Where I disagree, is that more follow through produces more action on the cue ball.
In a scenario where all conditions are static (table, balls, cue/tip, humidity, cloth, etc.)...
Player A plays a straight in draw shot hitting the CB two tips below center, and has a 4" follow through.
Player B plays the same shot, but with an 8" follow through.
If both player's cues are moving at the same speed at the moment of impact, then the results would be identical.
Jon,
For discussion sake, how about we keep it with one player to keep
all else equal.
How does one get the exact same speed with twice as much follow through?
The stroke of the 4" follow through had to start stopping before that of the 8" follow through or it had to have less speed to begin with.
As so often happens here on AZB, some, & I'm not referring to just you, Jon, seem to assume that everyone is using the same type of stroke.
Mr. Wiley is not using the same type of stroke as Scott Lee & there are many out here in the real world that do not use the same stroke as either of them.
Would it be fair to say that in a stroke such as Mr. Lee uses where the stroking hand goes to the same finish position 'every' time, that there can not hardly be a longer follow through.
It's different strokes for different folks & hence for some types of strokes the follow through, or for those that want to nit pic, what causes the follow through, can have different affects on what the cue ball does.
Yes, we all know that the ball is gone AFTER contact is complete. But... does the follow through begin at the initial moment of contact or is it after the ball leaves the tip.
For certain types of strokes the length of follow through is a by product of what went in before contact.
So...for certain types of strokes, the follow through or what causes it can certainly be what affects how the ball reacts. IMHO.
Best 2 You & All,
Rick
PS I think we all know that everyone does not speak literally in every instance. I doubt that Mr. Wiley actually thinks that it is the actual follow through after the ball is gone that can make a difference, But as I explained it's what causes the different follow through that actually affects the ball differently.
PSS What is almost always left out of the argumentative discussions is the timing of a stroke.