Coach Ken Dehart demonstrates how to set up and execute a structured drill focused on rallying 20 balls with specific shot directions and depths. The lesson emphasizes the importance of clear communication, defining shot goals (like direction and depth), and using eye coordination to enhance players' performance. He explains how understanding the purpose of each movement—whether top spin or under spin—can dramatically improve technique, footwork, and mental focus. Players are encouraged to actively engage with the drill, moving intuitively and with purpose, while coaches provide minimal verbal corrections.