www.poolplayers.com – Dr. Cue Pool Lesson 20 Stroke Practice With Barrier Training – Developing a straight stroke means that the muscle memory of the stroking movement must be trained to go straight. The diamonds on the rail tops provide a natural method of doing this. In addition, a unique “barrier” technique for conditioning the proper muscle memory of a topflight stroke can help tremendously. A few minutes a day with either of these stroke enhancers will assure a higher degree of shot success and game victory!