How does a player cultivate the proper length of backswing? We are all individuals and our muscle coordination is not the same,therefore it would be foolish to try to force the club to a parallel position at the top of the backswing. Trying to take the clubhead to parallel will not only shorten your distance it will wreck your accuracy as well. So returning to the earlier premise:The club should not go back any further than you can turn your shoulders.
How can golfers learn this? By feel, Keep the left wrist in a flat position in relation to the back of the left forearm and back of left hand. This will allow the wrist to hinge naturally,not break,which will allow the club to go back only as far as the shoulders turn. Practice this drill daily,and before you know it your muscles will get conditioned and trained to stretch further under control to create the arc you desire without overswinging. Going to parallel is not the answer to solid shot making,and power. Distance is the speed of the lower body pulling the speed of the motion of your left arm corresponding together to launch the ball towards the target.
Checkout my short game article on how to control "Spin" on your wedges in the May, 1999 issue of"Golf Tips" magazine.
Please contact me at firstname.lastname@example.org if you have any questions about this wonderful game.