On RAIL On FAIL

Will bigger fins will hold me on the face better ? I heard twin fins aren't good for steep good waves ?
Check out Josh Kerr on a twin fin fully on rail. See how his back and shoulders create the "I-Beam" effect inline with the angle of the deck.
Now check out the guy bent over and broken at 2:30. Reaching out and grabbing. Notice his front foot turned in closed ?
You think he should change his fins ?
Check out Josh Kerr on a twin fin fully on rail. See how his back and shoulders create the "I-Beam" effect inline with the angle of the deck.
Now check out the guy bent over and broken at 2:30. Reaching out and grabbing. Notice his front foot turned in closed ?
You think he should change his fins ?