RedactedNarrative: OPERATOR had just beach his sailboat due to strong winds on the reservoir. While securing it to shore, the wind shifted and the sail boom swung around hitting him in the face, knocking him unconscious on his back in the water. When he came to he stumbled down the beach to a nearby family where he then collapsed. They rendered aid and called for help. OPERATOR received medical attention from EMTs and myself, and was transported by ambulance to Utah Valley Medical Center, where he received stitches around his eye and nose, and was treated for a broken nose and a concussion. I towed the boat off the water. Closed.