RedactedNarrative: Tube was leaning against engine compartment and suddenly became air borne and ejected the boat toward rear. The tube rope was connected to the back of the boat for towing.  Passenger/Injured stood up to try to grab the tube before it was ejected and simultaneously stepped into the loop of the tow rope without realizing it.  Occupants shouted to Passenger/Injured to get his foot off the rope but as the tube sailed, the tow rope grabbed and ejected Passenger/Injured out of the boat via the rope wrapped around his lower leg. 
  
   Passenger/Injured was airborne and landed in the water 40-50ft behind the boat.  Operator saw Passenger/Injured being ejected and stopped the boat and turned off the engine so as not to drag Passenger/Injured which did not occur.  Occupants dove in the water and swam to Passenger/Injured who was shouting in pain.  EMT didn't find any broken bones or cuts. It was decided to transport Passenger/Injured to the EMT vehicle and taken to the hospital.   At the hospital, he was treated for rope burns and released to his parents.