Why would you be concerned about your thread being deleted ?....you haven't done anything wrong.
Practicing inferior and low percentage methods will not make you great. Think how great you might have become if you had practiced the highest percentage methods of play. Did you waste your life?......possibly. Therefore you probably remain a shortstop?? Only your opponents really know, I sure don't.
Some of the greats that I knew (Grady Matthews, for one example, who was far from being a dummy) all advocated looking at the edges of the balls at the visualized contact location and then bisecting the angle to predict pretty accurately the direction the balls would take. Luther Lassiter and Jimmy Reid practically lived by the half ball hit initial lineup...so did Puckett, The Squirrel, Billy Johnson, Don Watson.
And you say there are no edges? I guess in the sense that the edges are not like on a cube, that is correct...but they're certainly 'visible' on the balls for estimating purposes. For example, the edges that you say do not exist are used daily, even hourly, to determine who has won the lag before a game. I'm betting that you use the same edges (that you say don't exist) yourself when you've done a lag. Mmmmm?
Concerning my not practicing enough.........somehow I had an idea that someone would say "it's all my fault". You're stone cold correct about not practicing right though....I was still stuck in the mire of ghost ball guesswork. Violating the old adage of "doing the same thing over and over and expecting a different result = insanity"......for decades.
I take my strokes where I find them...the last thing I want to hear is someone telling me I make it look easy. As for me, the highest compliment I can get is something to the effect of "you sure are lucky".
Nevertheless, time marches on...........and for me, the balls keep going into the pockets accompanied by predictable position at a much higher percentage rate. I kinda' like that.
I can't say the same for your methods...been there and done them.