I learned old school when we were told to keep the racquet head above your wrist on the forehand. I can still see the Stan Smith picture where this was emphasized. For effective topspin on the forehand, one needs to get the racquet head below the oncoming ball. This means bend the knees or loosen the wrist and grip so that the racquet head drops lower than the ball. Does anyone have suggestions to assist with this? I find it extremely difficult to relax my forearms and wrist on the backswing and forward swing.