Here I am bowling on the 39 foot Chameleon Pattern. According to the PBA’s website, this pattern is 24.7 ml and 2:19:1. I have been trying a different stance here and trying to keep my pushaway small and my swing compact. When the push away got too big or if I pushed the ball too far up on the first step, the rest of the approach was a disaster. The ball I used was a 15 lb Roto Grip Idol with the pin underneath the fingers.