The pilot was landing in gusting wind conditions with a cross-wind from the left. After the left wheel had touched down and before the right wheel had been grounded a gust of wind lifted the left wing, causing the aircraft to drift to the right. Attempts by the pilot to re-land were unsuccessful and a go-around was initiated. The aircraft subsequently collided with a fence post and came to rest about 180 metres off the side of the runway. The aircraft encountered a very strong wind gust at the time of touchdown. The pilot delayed action in initiating a go-around and when power was applied the aircraft was unable to out-climb the rising terrain while flying downwind.