Allison Fisher BAT Billiard Aim Trainer
Ok, here’s how it works:
1) Align the BAT with the center of the object ball and the pocket.
2) Rotate the BAT until the BAT Arrow points back at your cue ball.
3) See the degree of the angle, contact point, path of the cue ball and how much of the object ball will be cut.
4) Play your shot.
If this sounds at all familiar to you, that’s because it is basically the same concept as the Ghost Ball Aim Trainer (which sells for about $20 less by the way).
If you’re curious as to how it works, check out the demo video: