I think if you need such a 'training ball', you should spend more time practicing jumping with a regular cue ball first. Then ultimately, you will figure out that this is a waste of $29.
Also, if you need a 'training ball' to learn how to jump, you damn sure arent ready for jump masse shots. They arent needed often, but if you just REALLY want to learn how to jump masse a ball, you will also realize that you dont really need the gimmick ball, and have just wasted $29.
Hope this makes sense.
BTW, is this the only shade of white that the ball is available in? It doesnt look like the best shade to learn how to jump balls with. So once again, it is a waste of $29.
Glad you asked for opinions, and damn glad I could help out. :thumbup: