Hi all,
had a meeting this afternoon with the builders of 4 cats of my design and some changes were agreed to that I think will benefit everyone.
First, we swapped plywood for 6mm foam core with E-Glass skins that comes in pre-made sheets (or you can easily make them yourselves) and all of the internal stiffning will be replaced with sine wave stiffners, so we end up with just 2 bulkheads and the centercase inside. Next change is that it will be built in 2 halves in females frames. The last change is that we are going for a curved traveler track and a boomless rig. All of the above will ultimately make the boat cheaper and lighter and faster to build. Hulls have now been scaled to 3.8m along with some cosmetic changes to make the boat look nicer and float better. Will get some new pics finished shortly to show the changes.

Cheers
RG