We all know that a backboard is a great practice partner because it doesn't miss a shot. The problem is, a regular tennis ball comes off it so quickly that you have little time to prepare for your next stroke. It won't do you much good to practice if you're rushed to keep up with quick returns off a wall. To make your wall workouts more effective, use a foam or low-compression ball instead of a regular tennis ball. You'll give yourself more time to move your feet and master your technique.