Abstract: A training device arranged for advantageous practice use by pool players for improving their playing skills. The device includes a central elongated narrow panel structure having adjustable overall length, and has a support leg adjustably attached at each end of the panel structure. The device can be positioned transversely on a pool table with each leg resting on a side rail of the table. In this position, a view by a player of only the cue ball and a selected object ball is possible, and an undesired view of the selected pocket is temporarily prevented while the player takes a shot. A combined training system and method steps useful for improving skills of a pool player are also disclosed.