Re: to jump shot question
I can't imagine looking at the cue ball last on any shot, but some players do watch whitey while breaking playing 9-ball. My preferance is to never look at whitey last no matter what the shot may be, you could be on to something however when visualizing where the cue ball will land when executing the jump shot.
I hope this helps but I must add that it takes more feel and skill to kick rather than to jump at it with a phony phenolic tip, this and other elements have hurt the quality of the game. Jump with a leather tip, as the phenolic tip has been outlawed from certain tours, any other way is uncivilized or as Earl Strickland would say be a man Ha Ha.
Sincerely 'little Danny'