RE: Has the Ultimate ever competed in IAC?
The Ultimate wing preceeded the "Ultimate" craft-- as I recall.
The Cassut entering IAC was a real surprise to me - but there it was!
If one really looks at the Cassut setup - it can be seen that as a model it would be very much like current 3D thingies.
I like variety.
One thing fer shere dudes-
The wing loading could be extreeeemly low.