Very cool. The thing I really like about the early ones was that as an experimental class, you could get boats that were incredibly different to one another but still technically "moths". Much like early formula racing, there really was the latitude to tune the boat as well as your technique.
Not that I ever did with this one, it was about thirty years old and took all of my effort just to learn how to keep it upright. You also couldn't moor it anywhere because it would fall over if not moving which meant leaving it on its side at the jetti...