The private pilot of the personal flight stated that during a visual approach to a grass runway, he noticed the airplane ground speed was higher than usual. He increased the wing flap setting to slow the airplane and maneuvered the airplane to avoid obstructions on and to the side of the glide path; he said he could have performed a go-around but decided to continue the approach. He then realized that attempts to slow the airplane were not realized due to a tailwind. The airplane touched down for landing on the runway and bounced twice but did not slow. The airplane overran the runway and impacted a fence and trees at the departure end of the runway. The airplane sustained substantial damage that included damage to the left wing. The pilot stated there was no mechanical malfunction/failure of the airplane.