I scratch too much! In fact, I can't believe how much I scratch.
How can I avoid scratching so much?
First off, don't tell me I'm shooting too hard. As you get better and want to get more than one thing accomplished on any given shot. You want the cue ball to travel around for position and you want it breaking-up clusters.
I've studied many suggestions that say that cue ball and object ball deflection results in variations on the 90-degree angle, and Dr. Dave's videos on billiards.colostate.edu promote predicting the result with a two-fingered peace sign on most shots (30-degrees).
What I want to know is ....
Are there any geometric principles that reflect that bouncing perfect balls on a perfectly 2:1 ratio rectangular playing surface (with openings in the corners and midway, of course) will naturally lead to the cue ball going into one of those openings?
The most common example is whether a cut shot, that looks to be "dangerous", has more than one ricochet that will head to a corner pocket. This seems to be a reason to use the "peace sign" estimation method, where most ricochets go off within a 30-degree span.
If it were just odds, you could roughly take the distance of the perimeter of the surface (e.g. an 8' x 4' pool table = 24'), subtract the combined widths of the pockets (2') and predict that any random ball has a 1/12 chance of going into a pocket every time it banks, or something like that.
I'm tellin' ya, if I find out that the physics are stacked against me, I'm gettin' outta town! Right now I feel like I scratch once in every 6 shots!
As you alluded, I'll keep on in my quest to find advice, especially on scratches that involve at least one after-cut bank. I should probably appreciate the entertainment of the game when I scratch off of multiple rails and balls, in various orders...