Whatever works for you. I watched two young guys playing nine ball several times, and the one, stood up pretty high,wore glasses, so probably had to adapt to looking past the rims, he also had a really weird pump stroke like Efren, with a dramatic pause at the end. Almost never missed a ball. The other guy was a real tall kid, you could tell he was the tallest kid even in grade school. really long arms and a wide torso. He played with a 60 inch cue and still had his whole hand wrapped around the butt!!! He held the butt with his fingers and thumb along the sides straight out, and the end of the butt was up against the palm of his hand.. He had a beautiful soft stroke that moved the ball like magic. He also almost never missed a ball. I am sure that if they had the resources to play and practice full time, both of them could have won matches on the pro tour.