You can literally 'see'....and 'feel'.....the power in the rear leg of the golfer on the left....and the lack of power in the front leg of the golfer on the right.

The rear leg offers CONSIDERABLE more power than the left. Fact.
Harper spends his rear leg power....to simply get to.....the front leg.....which is very weak. His rear leg power IS NOT part of his swing. It powers his shift....not his swing. His swing occurs AS the shift hits the lead leg.

Now....he shifts pretty darn fast. That rear leg provides very strong momentum. That creates power when it hits the lead leg.

But not until.

And therein lies the problem.

You don't have time for that against 95.
You have no adustability mechanism when you see 75 or moving 88.

Bonds and the other greats.....their rear leg is a drivetrain. An engaged driver....turning the resistance. NOW. It turns the system BEFORE weight shifts. The turning shifts the weight. The weight shifts BECAUSE OF the swing....not before it.