Hip bump: left femur over the left knee, hips square
The hip bump as the coach demonstrates it: take the pelvis and move the top of the left femur right on top of your left knee, and make sure the hips stay square as you do it. He says this sets up the post, the brace.
Channel: PorzakGolf
Watch official source at 3:57Why this context matters
Coaching the move hands-on in person.