RedactedNarrative: VICTIM AND PASSENGER 4 (THE FATHER) WERE BEING TOWED ON A WAKE BOARD WHEN SLACK DEVELOPED IN THE ROPE AND PASSENGER 4 FELL OFF.  THE VICTIM THEN FELL FORWARD INTO THE SLACK ROPE AS THE OPERATOR ACCELERATED.  THE ROPE TIGHTENED AROUND THE VICTIM'S NECK AND PULLED HIM UNDER.  THE OPERATOR STOPPED AND JUMPED IN TO SAVE THE VICTIM.  ONCE ONBOARD V1 THE VICTIM BEGAN VOMITING WATER AND LOST CONSCIOUSNESS.