Brian
I have been reading through your stuff. Interesting, nearly put me to sleep with all those words but the ideas were there.
Fishing under sail nothing new about that people have been successfully fishing under sail for thousands of years. Just they didn't turn it into a professional sport. And I can only applaud you on having the balls to design a vessel to do just that.
But I have to ask why the wierd rig that will undoubtedly at some point in time break. I can see at a glance at least 3 places where the loads must be incredable to keep the thing up while under sail. To sail this rig in 15 to 20 in any direction the loading on the mast base and back stays must be off the planet. I can only imagine that if the rig stayed together then the hulls and or cross beams must bend and twist like crazy. Even on a conventional rig this can be a major issue.
Now If I were to be designing a vessel to carry out this task I would be looking at the "freedom 40" as my starting point, a medium displacment mono hull with a free standing ketch rig and wishbone booms fitted with lazy jacks. Or maybe take it to trimaran with a similar rig, I do not belive that you could make it structurely sound on a cat.
Looking forward to the replies.