RedactedNarrative: Vessel 1 operator stated that he hit something underwater and stopped to make sure he was not taking on water.  He did not see any so he decided to return to the boat ramp.  While enroute to the boat ramp, one of his engines died.  He checked his engine and noticed that he was taking on water.  Operator 1 tried to make it shore.  Meanwhile, another vessel was passing and the operator waved them down for assistance.  Both the operator and passenger from vessel 1 got on the assisting vessel and were taken to tall chief boat ramp.  Area of the accident was approx 3/4 mile north of the twin points boat ramp and approx 30 yards west of the twin points camp grounds.