I had the black/red Tropical Storm drilled today. The pin is under the ring finger and a little to the left. CG is between the fingers and the thumb, right about in the middle. That's really all I know. I bowled two games with the ball but the lanes were way too oily. I didn't switch though, I just wanted to try the ball. But from what I could see, the ball goes really long and straight. I wanted it to go under my ZC in the hook department, and it sure does. I can't wait to try it on dry lanes.