Good luck John, it sounds like a good workaround if you get the dart outline right (I find it difficult to "guesstimate" this). Perhaps use both stitching and glue to make sure the seams can handle the load?
If anybody would like to have a look at a spi-design I am working on, you can download it from:
tornado-spi-27-11-05.saildefThe software needed (Sailcut CAD) can be freely downloaded from:
Sailcut-1.2.0Qt runtime Any comments appreciated.. I am not as bold as John, so I will do a 1:10 crosscut model and see how it flies before I order the cloth.