I like everyone else am always trying to improve my stroke. On the backstroke your hand is back and ready to swing forward. My question is should you just let your arm relax and let it swing freely or should you force it with some power? I have found that if I just let it swing after relaxing my arm the cueball will travel from the head string to the end rail and back to the foot rail using a 8 inch bridge. If I want to have more speed (power) I use a longer bridge resulting in a larger pendulum. Is this the proper method or should you put some muscle into it?