Set feet outside the shoulders and post the trail hip back
The coach focuses on two setup things: setting the feet to the outside of the shoulders, and posting the trail hip back about an inch. He says this keeps the pelvis, hips and knees square and tilts the spine angle back a little, which makes it easier to turn behind the golf ball.
Channel: PorzakGolf
Watch official source at 0:18Why this context matters
Coaching a player (Billy) through driver setup reminders.