Swing Speed Radars - Did I Do It Right or Did I Not?

Cordy, I bet there's a couple times you tried something out and your mind said, oh, I bet that one was better. And then you look down and it was actually two or three miles an hour slower than what you did before. Why does that happen? It's just because everybody's got misconceptions about where your speed comes from. You have to have something to measure this with if you're going to do any of this.