I just recently found a shot that I will look at the object ball last. (A very close proximity thin cut.) Ronnie O’Sullivan did say he couldn’t be sure when asked on one particular shot. So I feel good still learning.
When the cue ball and object ball are within a few inches of each other or less and I am cross banking a ball I raise the back of my cue up very high and fire down on the cue ball. A friend saw me doing this and asked why. My first couple of answers in my mind were because it worked and it was the way I have been doing it since almost the dawn of time.
When I think about it, with both the cue ball and object ball skittering around not really on the table all of the cut induced and cushion induced spin never have time to take effect. The balls move at very true angles as they should, only the compression and rebound of the cushion having an effect. A different shot causes me to have to consider more things other than just how the object ball is going to rebound off of the cushion.
I don't remember my skill level when I learned to shoot these shots the way I do. No pretense it is the best way, but it does work very well for me! Unless other considerations make this shot a bad option, I guess I don't need to think past that.
One thing going for the bank and the thin cut like Ronnie mentions, from up high the actual collision points on both balls can often be seen.
Hu