There's a simple way to give you the feeling of a proper shoulder turn without the hips getting too involved, as they often do. Sit on the edge of a golf cart (or in a similar position). Put a club on the line of your shoulders as if you're simulating address. Now, simply turn back and try to get the shaft pointing straight in front of you. You'll find quite a stretch in the left side, which is good. This helps you get behind the ball better and results in a few more yards.