Often on youth league teams the only bats available are too heavy. If this is the case hitters should experiment with each bat by choking it at different points to find the "balance point," the position where the bat feels comfortable in the hitter's hand. By varying the position of the hands on the bat handle, a hitter can find and mark the balance point with a piece of tape where the bottom part of the lower hand is positioned on the bat. The tape will remind the hitter where to hold the bat each time, thus increasing bat control. A bat is not always controlled best by holding it down on the knob.
Excerpt from Ch. 1, pg. 17