RedactedNarrative: THIS CRASH OCCURRED AS VESSEL 1 HAD 2 PASSENGERS TUBING AND SKIER 8 BEGAN TO COMPLAIN HER HEAD WAS HURTING. THE CAUSE IS UNKNOWN FOR THE INJURY/HEALTH ISSUE AND SHE BECAME UNCONSCIOUS. IT IS UNKNOWN IF SKIER 8 OR ANY OCCUPANTS WERE WEARING A PDF.  NO VESSEL DAMAGE.