Arne,
The main plans I work off are a big pencil drawing, too light to show up in a photo.
I did something in pen here. It doesn't have the rudder or off-center board, but the boat being flat sided, I can move the CLR as I like, so that is not a constraint. I think I may have gone small on the board, which I built to put 8 sq.ft. under water. I can rebuild it if I must.
One problem, (besides my haphazard approach) is that I haven't actually weighed the boat yet and I'm not certain what she weighs dry on the trailer, much less full of humanity and gear and supplies. My GUESS based on measuring the immersed part of the hull is that she wouldn't come in under 2500 lbs. In that case, with 185 square feet in the main as i have drawn it and 60 in the mizzen, the combined 245 sq.ft. would give me a very decent SA/D of 21.
I am learning LOTS in this process. For example, that it is going to be hard to sheet a sail like the one drawn with a single sheet with the mizzen in the way. I had hoped to sheet from the aft end of the cabin roof, but I don't think I can do it. Is there any way for me to get around double sheets? I would almost rather do anything else. Could I extend the highest batten?
I could eliminate the mizzen altogether and go a bit bigger on the main and sheet from the transom, maybe?
The whole idea of mine was to do something quick and get out there this summer and learn about junk rig rather that being in the shop until the fall making the perfect sail. That's why I was shying away from a Split Rig- too much work. I wanted to make a flat sail that I can learn on and have some fun with for a season or two, then make another if I need to.
thanks,
David