What happened
Prior to arrival, the pilot received weather information indicating northwest winds for an airport near the destination. Based on this information, the pilot arrived at the destination airport with a mental preparation for landing on Runway 24. This decision was influenced by the observation that the windsock at the approach end of the runway appeared limp.
During the landing sequence, the aircraft experienced a long touchdown on the runway. The pilot was unable to bring the airplane to a stop before the end of the runway. Consequently, the aircraft overran the runway, colliding with a fence, a tree, and rough terrain.
At the departure end of the runway, the windsock indicated that a 10 knot tailwind was present, contradicting the pilot's initial assessment of the wind conditions.