I just got back from a tourney this weekend where I struggled with carry in the first of four games. After paying attention to the deliveries of others around me who were striking at will, I changed my axis rotation.
I usually finish my delivery in a "thumbs-up" position. A hand shake as it were. The last three games of the set that I bowled, I purposely released the ball in a "thumbs-down" position, or at the very least a suit case position.
My carry jumped up and increased considerably. Anyone else ever tried this type of change-up?