In my Ultimate Pool Secrets DVD I refer to it as the "Three Part Pocket System"....I divide the pocket into 3 parts and aim at one part while addressing the cue ball to throw the Object ball into one of the other two parts....this is something I learned in golf.....Pro golfers aren't trying to hit any of their longer shots straight, they, instead aim for one side of the fairway and either draw or fade the ball into the middle or other side...I'm doing the same thing, and if we hit it where we aim , it's still fine, however, we give ourselves a MUCH BIGGER margin for error....this is VERY important on long shots or on very tight pockets.