RedactedNarrative: Vessel 1 left Holiday shores marina after refueling and headed northwest along shore line.  Operator was driving negligently and occupant yelled at operator to stop.  Operator stopped boat and than jumped in lake to cool off.  Occupant lose sight of Operator. Tried to retrive Operator.  Operator was unresponsive and not cooperating.  Went to get boat and lost contact again.  Called 911