sharks and big hollow waves help

try moving the board, not the mast.... it is a lot quicker. Hold the nose of the board and sidestroke it around so the mast is across the wind and clew downwind (whichever direction that may be).
Fly the rig - eevn if wrong direction. then the mast hasn't had time to fill up with water. So far we are up to about 15sec?
Then flip rig if necessary
whilst in the air