RedactedNarrative: Operator stated he was towing the Injured person on a tube.  Operator stated that the Injured person fell off so he circled around to pick him up.  Operator stated he turned off the boat and as the Injured person was attempting to get on the boat from the swim platform area, the Injured person yelled that he was hurt and needed help.  Operator stated the other Passengers in the boat assisted the Injured person into the boat.  They observed a lot of blood coming from the Injured person’s left leg/groin area and observed at least one large laceration.  The laceration did not appear to be a spinning prop injury.  Injured person was transported by ambulance to the hospital’s trauma unit.