FYI, the videos here also cover the subtleties fairly well:
Have you seen the article and videos? I show how to make adjustments where necessary (e.g., stretching or relaxing the peace sign for different cut angle ranges, and shifting the peace sign down the tangent line based on speed, which can be also varied with conditions). Fortunately, heavy and oversized CBs are rare nowadays. For those interested, ball-weight-difference effects are covered here:
Agreed. But it is helpful to be able to predict where the CB will head based on various common angle/speed/spin combinations. That's where the 90 degree rule, 30 degree rule, and 3-times-the-angle systems are useful, especially for beginner to intermediate players who don't yet have perfect intuition and feel for where the CB goes.
Yeah, I see way too many players here, when they have a winning shot on the 8-ball or 9-ball which is somewhere around or below the foot spot with the cue ball on the other end of the table. They are afraid to try to cut it in the corner, thinking it is a scratch shot, so they end up trying to do something stupid like trying to bank it or attempting to play the shot with draw - the only possible way to scratch. They don’t understand and see their carom angles to know that if they just roll the cue ball, they can cut it in and the cue ball will hit off the end cushion, no closer than half a diamond from the corner pocket.