Rick,
I bought the Birder 2 plans specifically because I believe them to be well suited to sailing. I long to do the wilderness waterway in an Everglades Challenge but am told my Sea Pearl, in reality a large sailing canoe, is too big for Broad Creek. Matt Layden seems to prefer lug rigs and I suspect I'll go in that direction or just a down wind sail as Doug suggests. I prefer a simpler approach than the Balogh rigs and believe trimarans should have a proper main hull and not an adapted form with design stability. I'm a bit twitchy on trimaran design having owned several over the last 25 yrs culminating in my current F-31. I would consider a double outrigger as a more appropriate description but I'm certainly now splitting hairs. Good luck, Dave