The pilot reported that he was performing a visual approach to a grass runway, when he noticed the airplane’s 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, but then he realized that attempts to slow the airplane were not realized due to a tailwind. The airplane touched down 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. The airplane sustained substantial damage to the left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation. At the time of the accident, the pilot was landing the airplane to the north with wind light and variable from 080 degrees and gusting to 10 knots. The pilot reported that he could have performed a go-around but decided to continue the approach.