I was flying my dads zagi 480 (55kph) I was flying quite low and very fast and I flew to close to a tree The left wingtip clipped a tree , the zagi did a flat spin for about 720 degres hit the groung bounced back up again and it all happend so quick I didnt have a chance to cut the motor so the zagi just carried on flying !If that had of happend with anything but a zagi I would of been taking my plane home in a plastic carrier bag!