RedactedNarrative: V1 (rental) was brought back to the marina by the operator; at which time he notified the marina that he had struck something in the water.  Upon interviewing the operator it was determined he was operating in the day use area of Dam Site Park in the no wake zone. He advised he was not going fast but felt an obvious strike as V1 hit an unknown object in the water.  At this time the lake's water level is down and this area is traditionally very shallow and narrow. Inspection of V1 revealed significant damage to the prop and the skeg was broken off of the lower unit.
   
  The other occupants of V1 were unable to be located and the operator only knew the first names of two of the passengers so no information could be obtained on them.