One dependable aspect of the golf swing is you will always get a variety of answers to a question such as yours. Here's mine: Start square, keep it square, and return it square. Assign to the hands/arms the function of maintaining position, not powering the swing, using the large muscles of the torso to swing the club. The primary cause of inconsistant hits as you describe is attempting to manipulate the hands/arms into some predetermined position. The small muscles in the arms cannot possibly hit the ball consistently unless they are driven by the large core muscles of the torso. It may help to read the "wrist hinge" thread posted by Ehien.