RedactedNarrative: VESSEL 1 WAS BEACHED SOUTH OF THE FIREFLY BOAT RAMP.  DRIVER OF VESSEL ON WAS GOING TO BACK THE VESSEL UP AND PROCEED OUT INTO THE MAIN PORTION OF THE LAKE.  DUE TO THE DRIVER'S INEXPERIENCE SHE NOTICED THE "R" ON THE THROTTLE CONSOLE AND THOUGHT THAT IS WHERE THE THROTTLE NEEDED TO BE FOR IT TO GO INTO REVERSE.  DRIVER PUSHED THE THROTTLE BACK AND THE VESSEL ACCELERATED QUICKLY  IN REVERSE IN A CLOCKWISE DIRECTION THROWING OUT PASSENGER 1.  PASSENGER 2 WAS IN THE FRONT OF VESSEL 1 AND JUMPED OUT TO TRY TO ATTEMPT TO PROTECT PASSENGER 1 FROM THE SWINGING BOW.  THE VICTIM WAS SWIMMING TO THE NORTH OF VESSEL 1 WITH SOME SMALL CHILDREN.  WHEN VESSEL 1 CAME AT HIM STERN FIRST, HE GRABBED THE CHILDREN AND KICKED VESSEL 1 IN AN ATTEMPT TO GET OUT OF THE WAY OF THE VESSEL 1.  IN DOING SO HE WAS CUT BY THE PROP OF VESSEL 1 ON THE CALF AREA OF HIS RIGHT LEG.  HE WAS TRANSPORTED BY LIFE NET TO LSU MEDICAL CENTER IN SHREVEPORT LA.