Dryland: Your stance should be with your feet about shoulder width apart and almost square with the surface you are bouncing the ball off of. The foot on the side you are catching the ball with should be about 12" further back from the wall than the other foot. Keep the ball above your head. Allowing the ball to drop lower really doesn't transfer much to the pool. Now try bouncing the ball against the wall. Try to keep the ball above your head. Let your catches be a soft landing. The ball shouldn't smack the palm of your hand. Rather, your fingertips should engage with the ball first at arm's length out in front of the plane of your body. As you make contact with the ball, pull your hand back so that it acts as a shock absorber to the impact of the ball, with the ball stopping back behind your head. This gives you better control. Let the ball slow to a stop behind your head, slightly rotating your upper body and transferring your weight from your front foot to your back foot. When releasing the ball, it is much like cracking a whip. Tranfer your weight from your back foot to your front foot, rotate your hips, then your upper body. This torso rotation is where your power should come from. A strong throwing arm starts primarily with your legs and your abdominals working in sequence. Your shoulder and elbow provide power also, but should be mostly for guiding the ball, not for power. Your wrist and finger tips are the fine adjustments prior to releasing the ball. If your arm and hand are doing all the work, you won't be able to find accuracy. Follow through with your hand and point your fingers at your target to ensure good follow through. The ball should have good backspin when it leaves your finger tips.