I've tried this drilling in the past. Made a great dry lane ball...but you need to have a ball with low enough top weight to get away with it. I put the pin in my gripline and the cg was just below my ring finger (right hander). I had to put a weight whole pretty high up...but it worked. Given the equipment now a days I don't think this drilling is needed unless you are a full roller or just trying to kill a ball.