Make the hip bump one inch with square hips
For the hip bump, the speaker lays a club across the hips, keeps the sternum in place and the hips square, and moves the hips about one inch to the lead (left) side without any slide. He says this engages the inside of the right foot more and sets a post and brace on the left side, with a spine angle that lets you turn behind the ball without swaying.
Channel: PorzakGolf
Watch official source at 9:39