Clay Ballard of Top Speed Golf introduces a 'pause drill' specifically designed to eliminate casting and increase driver distance. By pausing before impact and at the straight-line release, golfers can feel the transition from a 'thumb back' lag position to a 'thumb down' snap, resulting in more clubhead speed.
Pause just before impact to ensure the lead wrist is flat and the thumb is pulled back toward the body to maintain lag.
Pause at the 'straight-line release' point with the thumb pointing down to master the whip action through the ball.
Eliminate 'flipping' where the lead wrist cups and the trail wrist bends forward, which causes massive inconsistency.
Apply pressure with the bottom two fingers of the hand to feel like you are snapping the grip right off the club at the bottom of the swing.