Speaking of Harvey Penick, I was reading in his Little Red Book the other day that the way to start the down swing is the simultaneous returning of the left heel to the ground along with returning your right elbow to the body. I haven't gotten a chance to hit the range yet (tonight - my girlfriend is out of town ), but it sounds like it has potential.

I think once you start trying to turn your left hip out, what you're much more likely to do is sway rather than actually rotate the hips.