it could damage your fingers. i like to pick the lighter balls that my four year old would want to use. gutter balls are like hell, right? (not really swearing here, just using a simile) heaven is a strike. you get right to the point (slightly left of the center pin - little curve as it goes down the alley). follow through with the arm. wait. watch it go down before moving one little bit. must hit must hit must hit. ohhhh yeeeaaaahhh. (as my son says) but i always beat him (well, almost).