RedactedNarrative: Subject 1 was operating his boat pulling subject 2 behind in an inner tube when the boat struck a submerged piece of  wood.  The boats propeller struck the piece of wood and tossed it into the tube that subject 2 was riding in, striking him in the head.
NameOfBodyOfWater: 0466 LYNDON B. JOHNSON
NearestCityTown: Horseshoe Bay                 