“When the arms hang down badly at the set up they can upset your ability to turn the spine correctly. This means your upper body rotation will be reduced and the synchronization of your arms and hands with your torso movement becomes more complicated than it needs to be.
Try this quick drill to test your arm hang:
Start by standing up straight with your shoulders back but relaxed down and arms hanging freely and naturally by your side. Keep your weight neutral on both feet.
Bend foreword from underneath your belly button, maintaining the spine angle and place a small amount of flex in your knees. If your arms are fully relaxed they will fall or hang into the ideal position. Try to maintain this arm hang position for all of your full shots and do not be tempted to hang your arms further away from your body especially with your driver.”