RedactedNarrative: This boating incident occurred on Lake Hickory about .25 miles above the US 321 Bridge.  There were six persons on the boat.  Three adults and three children.  According to the operator the boat started running roughly and handling poorly in the water.  Operator stopped the boat and opened a compartment in the stern of the boat and found that compartment to be full of water.  Operator attempted to bail water from the boat but was unable to keep up with the amount of water coming into the boat.  PFDS were distributed to and used by each passenger.  The boat then quickly sank and rolled over in the water coming to rest just below the surface of the water.  The forward portion of the keel was right at the surface of the water.   
  
  Up on inspecting the boat I located a large hole in the forward portion of the keel of the boat.  There was obvious indications of repair work having been done to the keel of the boat previously.  This was evidenced by the paint that had been applied to the area. There was still attached to the boat by what appeared to be either fabric or duct tape like material a flap of fiberglass material that had been previously applied to the hole in the keel.  The repair work failed opening a large hole in the keel allowing water to enter the boat.
   