The most critical hand for drawing or hooking the golf ball is your top hand because it is on top of the golf club and has the most leverage. For a right-hander that is your left hand. So it is very important that you have this hand positioned correctly and also it is very important how your left arm is positioned. Most people kind of forget this but it is very important that the radius of the forearm is turned over so that you can see two or three knuckles on the top of your left hand. The radius of the forearm is the part of your arm that rotates, or turns over, as you go through impact. If you grab hold of your left wrist and try to turn your left hand over it really won’t happen, it is really the radius of the forearm that turns the golf club and the clubhead over into a closed position after impact and lets you draw the golf ball. Here is a drill that you can do at the range or at home, and that is simply to put your right hand on the top part of your left arm so that it is locked in. Then when you go halfway back feel the rotation in the left forearm, in the radius, and then when you come through get a little shift with your body and then practice turning that hand over. You will start to feel that it is really the forearm, the lower part of the forearm, that is rotating. Keep practicing this, then take a golf club and put it just in your left hand and practice the same move. On the backswing you will see the face open and then as you go through it will turn over very easily. You practice that little move and that is what you want to have happen in your full swing. It’s the only way you are going to be able to draw the golf ball.