David Leadbetter Whip Stick Golf Swing Trainer Add it to your golf bag to use for practice swings and warm ups Helps increase swing speed and rhythm Reinforces good mechanics by making whooshing sound when you have the perfect swing The Whip Stick has a regular size grip to encourage good grip technique and the feeling of holding a real club. Biomechanics research has shown that swinging a light object before swinging a heavier object will lead to swinging the heavier object at a faster speed.