Anyone interested in finding more club head speed (which is everyone one would assume) should read the following then follow their work. I'm telling you there is GOLD in the pot at the end of that rainbow.
Reducing radius is the key and there are many ways to skin that cat. El Tigre "snaps" his left leg and is so doing move the left shoulder socket up. That's probably not the best way though lest ye too eventually need surgery.
Forget about "snapping your kinetic chain" (its bs anyway) learn to control your HAND PATH!