“The video and tracer lines are really quite important because not even the teacher always sees ball flight as a 4,000, 5,000, 6,000, 7,000 kind of rpm number. But he does see what the spin axis is in terms of slice or a hook or small fade or draw. He basically is seeing how well a player does or doesn’t control the ball. As a teacher, I can pick out the top 10 percent of the shots and I can tell you and show you what worked vs. what you’re doing now and why it’s not working. If you learn to compare against your good shots, suddenly you’ll have an epiphany about what works. ”