The beach ball is used to illustrate for students what must happen in that critical millisecond of contact with the tennis ball. This inexpensive tool is used often in Target Tennis™ training. If you teach, you'll want to have one or more available for training your students. Practice hitting with your palm out of your other palm, and catching, back and forth over the net to help students understand what must happen in that critical moment of contact with the ball and how they can add various amounts of spin and pace to the tennis ball. This tool also helps students understand spin and the aerodynamics that affect the travel of the ball. Buy Target Tennis™ lesson #1 and you'll quickly see the need for this inexpensive tool. You will not find this useful training method anywhere else, unless it has been copied from this website or our trainings.