Using ghost ball is not really about seeing a ghost ball. I have never tried to see a ghost ball, instead I see a space, area to fill, to put the CB.
When you throw a wadded piece of paper in the trash, do you use ghost wadded piece of paper? Meaning do try to see a ghost wadded peice of paper to aim at?
Or do you see a opening to put throw the peice of paper and from trail and error over years know what actions to take to put that wadded peice into?
Do pitchers see a ghost ball in the catchers mit, or do they do from years or trail and error , learn what actions to take to put the ball in the spot in the catchers mitt?
In other words, practice is what helps. There is no education better than practice, trail and error. Now there will be those that believe you must take lessons and they are useful to a point. But even the best lessons from the best instructor in the world is useless without practice.
Practice is where you learn what you were educated about.