RedactedNarrative: Operator of vessel 1 had been partying much of the day.  Vessel 1 left a restaurant in Bolton Landing heading south toward Lake George Village.  Vessel 2 was cruising at a slow speed when it was hit by vessel 1.  Vessel 1 passed over vessel 2 striking one passenger in the head with the outdrive and causing serious prop cuts to another passenger.  Vessel 1 left scene of accident.  Both vessels had improper navigation light displays but neither contributed directly to accident.