RedactedNarrative: The operator left the dock in his watercraft with one passenger, heading into the main lake. The operator did not see a small island in the dark. The boat struck the rocky island and grounded. Responders made it to the boat and there were no injuries. The occupants of the boat were checked out by ambulance personnel. The operator's BAC was 0.07. He was advised to not consume alcohol and operate a boat. Life jackets were not being worn. There was some damage to the boat.