RedactedNarrative: Several pontoon boats were anchored at the sand bar.  Victim dove under water and underneath a pontoon (vessel #1) to retrieve a ball.  While under, the pontoon started up and propeller struck victim on right hip and left wrist, lower arm, and hand causing lacerations.  Vessel #1 drove off.  Victim believes this to be unintentional.
NameOfBodyOfWater: Walled Lake
NearestCityTown: Walled Lake                   