RedactedNarrative: Operator of vessel was inexperienced with the rental craft. As he was traveling at plowing speed he released the tiller to adjust his seating position thinking that the throttle would self adjust to the neutral position. 
  
  The motor flopped to one side causing the boat to make an abrupt right turn. Because the boat was plowing and was loaded close to capacity the rapid unplanned movement, and water rushing over the side, caused three occupants, including the operator to be ejected from the craft.
  
  A fourth occupant in the bow seating position was partially ejected.
  
  The vessel continued turning in a clockwise direction striking two victims. As the boat made a second pass it struck the operator. PFDs fell out of t he craft when occupants were ejected and were able to be used. The vessel made approximately 10 circles until the partially ejected occupant was able to climb back into the vessel and shut it down.