While on a full plane look for some smooth swell or flat water. Move your back hand slightly toward the clew of the boom.
Unhook and turn down wind with oodles of speed.
Rake the sail back and lay down the sail, just like a Laydown-Jibe. Shift your weight onto the downwind rail by gradually applying pressure.
Keep the sail raked toward the tail all the way into the other tack. In other words, oversheet the sail behind you. Keep you knees bent and let the mast hand drop toward the water. Be really aggressive and patient as the board continues it's arc.
As the board comes around really lean your leeward hip toward the mast base while keeping the sail oversheeted. This forces your weight forward while keeping your upper body balanced. You need to get that SPECIAL-FEEL here because the remainder of the maneuver is very different than a standard Carving-360.
Push out hard with the clew hand, lean toward the mast, and stiffen your back leg. This isometric action uses the force of the wind to push the board around and is the most critical part of the maneuver.
Once the nose of the board has passed thru the eye of the wind then quickly pull up with the front hand, stand the rig vertical, sheet in with the back hand, and lean forward toward the nose of the board. In other words, present the other side of the sail to the wind in one fast movement.
Lean back as the sail powers up again and you are completely around and pointing in the same direction you started.
Stand upright, trim, sail away.