Surf instructors properly teach beginners and groms how to jump off the back of the board safely. But they should teach beginners (especially heavy adults who can afford 10 ft. classic longboards) how to bail when they are riding the white water straight in at Mach3 and a bunch of guys are paddling right at them. Kicking your board straight out as you demonstrate a proper butt flop isn't the best option. Maybe they should teach how to surf where no one else is.