Anyway the discussion led me to experiment with looking at the cueball while delivering the stroke.
I started experimenting with looking at the cueball while delivering the stroke around 01-04-2013, and am pleasantly surprised with the result.
I think you're onto something that will be experimented with more in the future Greg. FWIW, I play a lot of shots looking at CB last. Especially shots with back hand english... if I do look at the OB, it's not for aiming, but for judgement of CB positioning.
I believe there is a great misunderstanding with aiming theory. People assumed they are aimed up, when they are not. Aiming in most cases is / or should be, the placement of the bridge. If that isn't in the correct line, then the only way to make the shot is to swoop.... and that's what almost everyone has been doing, and that's why they look at the OB last, to feel the swoop needed to make the shot.
Training to look at the CB last, and stroke straight through it, is a powerful way of developing accurate pre-alignment (bridge hand placement).
It's worth noting that CTE methods align to the CB. And the method avoids swooping or any second guessing of the original alignment.
It begs the question of the point of looking at the OB last. For most, it's so they can second guess the line for the pot during the stroke phase. For me, it's of little value beyond helping to gauge the speed required for CB positioning.
An interesting challenge I give to some players is to tell them to line up a longish shot, fix their bridge tight and then only look that the CB and stroke straight through the center. This quickly identifies their pre-alignment tendencies... usually too undercut, and sometimes with variations thin and thick.
I think most players pre-align lazily then swoop and/or make slight bridge hand adjustments during the stroke to make the ball.
Keep in mind that looking at the OB is a crucial part of pre-alignment, it's after the bridge is set that it needn't matter.