RedactedNarrative: The operator was using a trolling motor while fishing along the shore of Lake Cortez when the trolling motor became grounded rendering it ineffective.  Both occupants realized at that point they were too close to the spillway and the current began pulling them toward it. The passenger attempted to start the main motor but was unable to do so.  V1 began it's decent down the spillway at which time the vessel struck a concrete retaining wall; ejecting both occupants. V1 and the occupants continued down the spillway (over 60 feet to the bottom). The operator sustained minor cuts and bruising and the passenger sustained more substantial injuries (although non-life threatening) and was transported to the hospital.