According toJune 4 2008 at 12:24 AM
(Premier Login bob2aa)
Response to Arms in the swing
Denver,the arms are along for the ride,for the most part.They stay pinned to the chest.The body does most of the work.
He said to practice swinging with tees under both armpits. On the course,you can tuck your shirt up under each armpit before hitting the ball.
I find that keeping the out of the swing has helped my ball striking.