Unhook, and bear very slightly off wind with lots of speed.
Move forward on the board while remaining sheeted in.
Now step the front foot in front of the mast and let go of the back hand while letting the mast tilt downwind a bit.
Grab the mast under the boom head with the free hand and transfer your weight to the front foot.
Let go of the boom and reach the boom on the other side of the sail.
Now step to the other side of the sail and backwind the sail. Grab both hands to the boom.
Lean the clew back toward to the tail of the board to keep the board planing.
Slowly carve into the wind controlling the rig.
As your speed stalls then push out with the clew hand and apply pressure to your front foot so the sail will become vertical.
Sheet in with the back hand as the nose of the board points into the eye of the wind.
Present the sail to the wind and power up the sail while keeping pressure to the front foot. This is the actual transition.
Adjust and sail away smooth rider.