RedactedNarrative: Subject was standing in waist deep water behind his vessel (LA 6799 FZ) while the motor was running.  He was wearing a type 3 PFD.  Operator was standing inside the vessel next to the windshield and was not wearing a PFD.  The vessel was remote steered.  Someone on the sand bar yelled to put the boat in reverse.  Without looking, Operator put the throttle in reverse.  The vessel backed into Victim, the propeller striking him in the outer left thigh and knee, causing deep gashes.  Victim was transported by helicopter to LSU Medical in Shreveport, La.  Operator got into a vehicle to go to the hospital and he allegedly consumed alcoholic beverages at that time.  When Operator returned to the scene, he was brought to Natchitoches Parish Detention Center to submit a breath sample into the Intoxilyzer 9000.  He submitted to the test with the results being .078g%.  He was released based on his statement that he had not consumed any alcoholic beverages prior to the incident.