This plane-finding move gives you the freedom to swing fast.
"Once you're at the top of your backswing, start back down by leaning your entire body toward the target. Leaning automatically gets your weight going forward like it should, and it keeps your club from falling off plane, which can't happen if you're looking to compress the ball for max yards and spin.
I practice it by swinging to the top, pausing, then shifting to the left until my chest and belt buckle are slightly ahead of the ball. It should feel like you're really leaning into the shot, like you would if you were throwing a punch or un-jamming a stuck door with your left shoulder."