Get lots of speed for this maneuver. Unhook, and head downwind.
Make an aggressive carving jibe but sheet out the sail and keep sheeting out while maintaining board speed.
Keep sailing clew first in the other direction.
Now pull the clew down and back toward your feet.
The sail will backwind and the board will carve around.
Keep the sail sheeted back and lean forward toward the sail.
Lean your hip toward the mast base and bring the sail vertical.
Keep leaning forward because you're in the straps and you want to get your weight over the center of the board.
Sheet in and power up the sail. The power in the sail will save you from sinking like the Titanic.
Stand up and keep your rig forward toward the nose.