Set the trail hand non-rotational at address
Because of the tilt at address, the trail hand is set in a non-rotational position so the trail arm can move up and down without the hand rotating. The instructor considers this a key factor in consistent clubhead movement, and says it removes the roughly 13 degrees of trail-hand rotation a conventional setup would otherwise need to get the club into the downswing.
Channel: Todd Graves
Watch official source at 4:32