I'm not sure what our target is with this project.

If you want high performance single and double handed boat you really need to get into the development loop of the A-class and F18ht, which means that you need two masts, one A-class and one F18ht and you must sail it as an uni rigged boat. You can't just get two hulls, you need a complete Marstrom A-class and then an extra F18ht mast with sail.

As a F18ht turbo, 85 kg all up weight with F18ht sail and mast (add 10 kg for bigger sail, spi equipment and spi pole), it has the potential of being a really fast double hander.

If you want to go the easy way, buy a F16.

/hakan