Remember Robley, it's a quiet relaxation, not a rigid one. You want to be comfortable when you're down on the shot, not stiff. Now, there are shots that require extreme stretching and that can be uncomfortable. I know that. Practice Yoga techniques to learn how to better control your body and handle the awkward stances.
Tip number two - LEARN TO SHOOT LEFT HANDED! Practice 30 minutes a day, that's enough. This one thing alone will improve your game one full speed in a matter of months.
Excellent advice, I practice left handed an hour a week.