"I used Five Lessons and an old seven iron to retool my swing after retiring in 2007. The first discovery I made when emulating Hogan’s hand positions at address, top of swing and impact was that at the top and impact the range of travel in several aspects of both hands were being maxed out. At the top he fully extended his lead wrist locking it back towards forearm to bring the club parallel with swing line but by impact he rolled the lead hand into maxed-out flexion and rolled the arm so palm of hand was supinated also locking up the wrist. That locking up of the wrists made impact much more solid because along with the way he gripped the club in the air with bent elbows and lowered it my arms felt like twisted steel cables welded together. There is no “give” in the hands and arms when swinging like Hogan, thus no loss of power. My shots started flying further with more spin and straighter due to the way the grip at impact locked up the face. Something I realized about Hogan’s “waggle” he stressed the importance of was it was a rehearsal for how he snapped his hands down and face closed just before impact with the ball. I discovered that standing over a ball and doing nothing more than waggle the club up with wrist and letting the club come back down into the ball into his impact hand position that locked up the wrist joints very consistently hit the ball dead straight every time. But only if the face was open at impact and struck the inside of the ball! I recognized the wrist action and squaring of the face as feeling similar to hammering nails, swinging a axe to buck a log, casting a fishing rod and cracking a whip. It differed from the conventional swing than keeps the trail wrist in extension to lag the club behind hands. The waggle action CAN pull the hands down into maxed out unlar deviation in a golf swing at impact as they are in those other swinging actions IF THE GOLFER LETS THE CLUB WHIP FREELY AROUND THE HANDS AND SNAPS THE CLUB HEAD DOWN AT THE BALL LIKE CRACKING A WHIP!