When the two-piece bowling balls came on the market, shop professionals placed their internal imbalances in a myriad of positions, relative to the grip, causing erratic pocket pin carry and/or causing the ball tracks to run over the grip holes. Believing that the goal of serious bowlers should be consistency of roll and optimal deflection, leading to enhanced pocket pin carry, Bob Strickland refined a layout system that benefits bowlers using various types of release. He calls his system Dynamic Customization, because, rather than fitting internal imbalances to particular lane dressing patterns, it fits internal imbalances to release type; dynamics are customized to the way the bowler delivers the ball. The method of achieving axis stability and optimal pin carry is different from most of the drilling instructions included with new bowling balls. Its purpose is to maximize pin carry on solid pocket hits for an individual's release type without regard to making the ball's visible reaction take on any particular shape. The procedures described in Dynamic Customization are easy to master and minimize confusion, allowing bowlers to turn their attention to refining their forms, sharpening their ability to hit targets, and building confidence.