Yeah Farlo,I might sound dumb, but the first poster didnŽt make sense to me... lenghts of luff, and boom donŽt give sail area.
If I understood your post, you say that with the sail rigged and fully downhauled, the upper part, where the leach is open, would not count as sail area?
I find this subject very interesting...
For example, now severne has de Overdrive 11, and the Overdrive 11 light wind. If you get both unrigged and put on the floor one on top of other, you realize the differences in boom lenght and top width, however, both should have same area.
IŽll give it a try sometime, IŽll photograph and measure it on a Cad software, as someone gave the idea on previous post.