RedactedNarrative: 4 persons were in a canoe when a pontoon vessel caused a wake so large that it capsized the canoe that was 25 feet from shore.  One on the persons were wearing a PFD but there was only 1 other available for the other 3 persons.  He was having difficulty swimming and could not stay with the canoe.  A person on a jet ski saw that the injured was having trouble in the water and pulled the injured from the water to the water front property.   The Pontoon vessel still has not been identified or the persons on board.  Witnesses stated that they were a large group of young adults on board.  Several patrols were initiated to try and find the Pontoon boat and the injured was brought to see some Pontoon boats that fit the description but could not identify any of them.