RedactedNarrative: ACCORDING TO DECKHANDS AT MARINA, VESSEL ONE HAD JUST FUELED UP AT MARINA. DECKHAND PUSHED VESSEL ONE AWAY FROM DOCK. OPERATOR PUSHED START BUTTON AND VESSEL EXPLODED EJECTING BOTH OCCUPANTS INTO THE AIR APPROX. 10 FT ABOVE VESSEL ONE. BOTH OCCUPANTS LANDED IN WATER AND WERE QUICKLY RESCUED BY DOCK HANDS AT MARINA. VESSEL EXPLODED APPROX. 20FT AWAY FROM DOCKS, APPROX. 750FT EAST OF THE PRAIRIE VIEW BOAT RAMP AND APPROX. 270FT FROM THE SHORELINE JUST NORTH OF THE ACCIDENT. UPON THE INVESTIGATOR'S ARRIVAL ON SCENE THERE WAS DETECTED A LEAKING FUEL TANK. PIN HOLE IN FRONT OF TANK. EXPLOSION WAS OBVIOUS TO HAVE STARTED NEAR THIS POINT DUE TO THE CHARRED PLASTIC AROUND LEAK. THERE WAS WHITE POWDER RESIDUE FROM THE FIRE EXTINGUISHER WHERE THE FUMES COMBUSTED WHEN THE FUMES FROM LEAK IGNITED. THE FLAMES FROM EXPLOSION WERE IMMEDIATELY PUT OUT BY THIS. UNKNOWN WHAT CAUSED LEAK OR WHETHER OR NOT THIS HAS BEEN AN ISSUE WITH THIS MAKE, MODEL.