V1 EXITED (UNDERWAY) THE CANAL EAST OF TAMARIND DRIVE AND TURN EAST.  V1 WAS UNDERWAY ON PLANE ALONG THE SHORELINE AND STRUCK A ROCK PROTUDING FROM THE SEA BOTTOM.  THE V1 OCCUPANT WAS THROWN DOWN INSIDE V1 STRIKING THE RIGHT SIDE OF HIS HEAD.  THE IMPACT BREACHED THE HULL CAUSING V1 TO SINK SHORTLY AFTER COMING TO A STOP.   Occupant was taken to Lower Keys Medical Center assessment and treated for contusion to the head.  Occupant was released a short time later.
BIG COPPITT KEY               