A lot of amateurs -- slicers especially -- use too much upper body on their downswing. To work on the correct motion, place a Swiss ball against a wall. As you practice making your downswing, use your hips to compress the ball against the wall.
You have to grip the club correctly in order to properly hinge your wrists in the golf swing. game-inglove has a shaft palm line to help you do this. There is also an integrated laser for your swing path to really help you golf game soar.
PGA Tour Player's Golf Swing Secret Can Now Be Tested