No one uses a system, even so called system users. Just because someone uses the word system does not mean it is the most accurate word to describe the aiming method.
The word system is used is a marketing term to sell stuff......nothing more. It implies just do xyz and you will get results.....consistent results.
Nothing is further from the truth. In every aiming thread is hidden why one works which is why every other aiming method does........trail and error........doing and then seeing the results.
Seeing how the object ball reacts to being hit by the cue ball is where improvements come from and knowing how to adjust for a miss.......or knowing why you missed. No aiming method does that.
No aiming method can feel for you if your stroke is off, if your are not in the best shooting position for the current shot.
No aiming method can feel for you the needed stroke force to make the cue ball and object ball do what you want.
No aiming method can let you feel the proper shot sequence for a high ball run, something one pocket players no nothing about.
No aiming method can make you feel when a three way combo is right or caroming a ball off another is gonna work.
Y'all are so hung up on just making one shot......the bigger picture is lost. What is done with the object ball and cue ball is what matters. Make a ball, but no shot.....not good.
Most aiming "systems" have no provisions for safety play.....all seem to always be about putting a object ball in a pocket which is not the same goal for a safety.
A safety is about object ball and cue call placement.....seldom involves making the object ball, but does at times.
This is the biggest failing of most "systems". How do they handle safety play? If CTE is a center pocket system, that only a few visuals are need to pocket balls, where's does being able to place balls on the table that are not intended for a pocket come into play How does the one 2x1 come into play now?
How bout having to go two rails to kick at a ball and not hoping to just hit it, but to be able to hit it where you want to make it go where you want. Not a " system on earth can let you know when the shot feels right to execute.
Until you can just see the shot.........well, you are really discussing something you know nothing about