RedactedNarrative: On 07/23/2014 at approximately 1140 hours, Operator was operating his 17ft Alumaweld fishing boat approximately 12 miles above Grandad Bridge. Operator was cruising at approximately 25 miles per hour up the lake to go fishing. Operator took his hands off the steering wheel and reached for a bottle of water in his cooler sitting near the passenger's seat. Operator thought he had his knee holding the steering wheel to keep the boat traveling in a straight line. Operator's knee was not holding the steering wheel. Due to the right hand torque of the out board motor, Operator's boat started turning to the right. When Operator turn back with his bottle of water the boat was headed into the shore, towards a rock embankment. Operator was able to turn the vessel hard to port (left) causing the vessel to strike the rock embankment on the front starboard (right) bow. This then caused the vessel to spin hard to the port and the starboard side of the vessel impacted the rock embankment. Operator was thrown forward into the front window frame of his boat. Operator pushed the front window out from the frame and broke out the front starboard side window.