RedactedNarrative: The operator of unit 1 reported that her family was out boating and tubing since about 1:30 pm.  The temp gauge on the engine started to show hot so she headed for the part of Watts Marine.  The engine started to overheat and was billowing smoke.  Passenger used the fire estinguisher on the engine area, and he also soaked a couple beach towels in the water and layed it across the engine to help cool and smother any heat and flames.  
  
  Witness from another boat pulled up and all passengers were safely removed from unit 1.  Officer pulled unit 1 into Watts Marine and secured after making sure all electrical circuits were off and fire was estiguished.  In view was several electrical wires and rubber hoses showing heat damage.  The starboard manifest also showed the most heat damage.  Fox Lake treated and released occupant at the scene for the smoke he inhailed.