If you want a god example of the foam construction method John & Ian Lindahl have used on his last 3 boats click here

In an update on other stuff, not sure that the original round bilge design is going to make it to production anymore....as with most of the planet, the builder has money issues.
That said, I have been working (very very sporadically) on another F12 design, no builder or customer in mind, more or less for my own pleasure. This is not being offered, nor will it be available to anyone anytime soon....the attached pics are just eye candy.
Cheers
RG