I assume everybody does this, but when I bowled as a child, I very intensely tried to move the ball with my mind if it was drifting off in the wrong direction, as happened in many cases. Rolling the ball rather slowly gave it more time for my mental powers to work on it. Unfortunately, I didn't keep at it and my telekinesis is pretty rusty now. Casper is similarly keen to beat his friends but even eight arms isn't enough to give him the accuracy he needs. Bot actually, how are the vegetables throwing the balls? Isn't it... telekinesis?