While sailing in the switch stance position, turn the board downwind or down some swell.
Sheet in with the backhand and weight your heels.
Now turn the board in the other direction.
Let go with the front hand and reach back and grab the end of the boom by crossing your arms.
Now reach the other arm to the other side of the sail.
Reach the arm forward and pull the clew hand toward your ear so the sail will come back to you.
Adjust your hands a little.