RedactedNarrative: Vessel #1 was traveling North along a rock outcroppings of Back Country Campground at approximately 10mph, and came within 40 feet of a rock outcropping.  
  
  Vessel #1 struck a submerged rock with starboard pontoon midships.  Vessel #1 came to sudden stop, causing operator to slide forward into the console.  
  
  When the operator slid forward into the console he also pushed the throttle forward to maximum RPM's. With the throttle full throttle the vessel ran across rocks and tore open the starboard pontoon and the vessel also came free from the rocks.  Vessel #1 tried to return to the boat ramp however Vessel #1 starboard pontoon took on to much water and caused the vessel to capsize.