I have this laid out with the pin above the finger to give good length for my spinner release. Polished, the ball gets exactly that with a mild arc. I hit it with 3M fine and superfine for the JG it St. Louis to smooth it out a bit, but lost most of the reaction in the process. I did get a controllable reaction, but the ball was squirty on the outside part of the Sport shot, where I play most of the time. Admittedly, not where the ball was designed to be played, but an important drawback. Still, on a block house shot, a killer ball. If I had to do it again, I might get a little earlier rolling layout.