I used to play with a very loose stroke arm, with my arm hanging muscle-less from my elbow and me throwing the cue into the cueball. This worked sometimes but was fairly inconsistent. I recently switched to a very controlled stroke where I use more muscles to control the cue, and my cueball action and accuracy has gone up tremendously. I can't seem to figure out if a pro player is using a "muscled" or loose stroke, since many of them look so loose all the time. What kind of stroke do you use?