I have no doubt posted in this thread, lost in the mist now so I'll post again. I look at the object ball last, except when I don't. If the shot is where it puts a crick in my neck to look at the object ball I just pick a spot on the cue ball's path to the object ball and look at that. Sometimes I find it more convenient to look at a spot on what would be the extended line if the object ball wasn't there.
Many years ago I played cue ball last for three weeks or so. For me at that stage I couldn't tell any difference in effectiveness looking at cue ball last, object ball last, a spot on the table, or just let my eyes unlock into "the thousand yard stare." Once I locked into a shot I was locked in.
No doubt mentioned in this thread already and I am butchering the spelling of his name but Ralf Souquet always looked at the cue ball last including when he was rated number one in the world. In addition, it isn't uncommon at all to see people who really think they look at object ball last shift their eyes to the cue ball as the stick starts forward for the last time. Without the video they would insist they look at object ball last!
Another test I conducted without telling people what I was testing was how accurately people hit the cue ball. Out of a dozen players or more two hit exactly where they meant to. One was an absolute banger, one approaching A or shortstop level. Both looked at the cue ball last. Those that looked at the object ball last all hit a tenth inch off or more. Not a lot but on that last 5% or less of shots that make the difference between winning and losing I would much prefer to know I am hitting the cue ball spot on.
I do hit the cue ball spot on when in tune. I was surprised to learn that out of tune I hit the cue ball almost an eighth high and about half that to the left. I don't hit all around the spot I am trying to hit, every shot will be as described. I hit more consistently than expected even when it was consistently wrong! I thought I would hit with an even pattern of error around the spot I was planning to hit.
One thing that did not work for me is the sometimes recommended eye pattern of following the tip. Look at the object ball when the tip is pulled back, the cue ball when approaching it. This busy eye pattern was a nonstarter for me.
Many people would be surprised to learn that they shoot about the same with their eyes closed once everything is lined up. Looking away affects muscle groups and needs practice for maximum performance. However closing your eyes will have little or no effect on how you shoot. Might help since you are less inclined to steer.
Shoot however you are comfortable and accustomed to. The only thing I recommend to all is to let your vision settle in one place twenty or thirty seconds before shooting.
Hu