One of the most basic and innovative training aids of the last decade is the CueSight Laser Pool Cue. Designed to allow a player to see inconsistencies in their stroke, the CueSight has a laser tip that shoots a crosshair laser beam from the center of the tip. As you stroke, you can see any wobbles that might be throwing off your aim. When use in conjuction with the CueSight training ball, you can also develop the muscle memory to impart the proper english o the cue ball.