RedactedNarrative: V1 had ignition problem when starting for return to boat ramp. While underway, outboard motor sputtered and about to stall. Operator throttled and explosion occurred. Two occupants became swimmers. Rescued by good samaritan boat. 
  
  They were interviewed by fwc inv once they arrived at the postl point marina. Operator1 stated they had gotten underway and had supper at the boathouse restaurant at the north end of boggy bayou. The vessel ran fine from the boat launch at dana point subdivision. But on the return to dana point, the outboard engine sputtered and was hard to start. They were within 1500 yds of the dana point boat ramp when the engine was about to stall. In an effort to keep the motor running, he throttled and an explosion occurred, starting a fire on the engine he could not contain with the onboard fire extinguisher.