Over the past two weekends my aikido training has come in very handy i potntially dangerous situations. Once to fend off an attack from slightly behind and to the left as a horse tried to bite me on the shoulder while I was working on another horse. And again this past weekend when the 2,000 pound Belgian I was trying to trim sent me flying into a full backward roll, narowly avoiding a 4x4 post. In both cases my traiig prevented a potential serious injury. Both times I was able to mater of factly continue my work without anyone getting excited about the incidents and without significat interruption in the procedings.
Personally I thnk aikido is very efective. Just maybe not the way some people expect.