RedactedNarrative: Vessel 1 was returning to Eagle Bend from the Yellow Bay area.  Operator Vessel 1 was operating his vessel with his wife and two friends.  Vessel 1 left Yellow Bay at about 2130 hours after dinner.  When traveling up the channel from the lake to the river vessel 1 hit a floating log at the third red channel marker.  The vessel then started to take on water, as the port outdrive was torn off the transom.  
  
  Operator Vessel 1 stated he was having starboard engine problems at the start of the trip but continued on anyway.  Operator vessel 1 stated he had someone on the front of the vessel with a spot light looking for hazards.  Operator Vessel 1 stated he was traveling about 20 MPH at the time of the collision.  Vessel 1 was towed back to Eagle Bend by Sheriff''s Office Boat.
NameOfBodyOfWater: Flathead Lake
NearestCityTown: Big Fork