Mike has a couple of computer models of a beachcat based tri using a Nacra 6.0 or similar and a center hull based on his L7 trimaran float pan--itself pulled from a beachcat mould. I know the L7 Yahoo group has some ideas in the photos section. Using a spin cat with a central hull to make it a tri holds appeal as it is like two boats for the price of one. Beachcat for racing and tri for family. I just bought a H 18 in November and would love to do something like that, although it might not be the optimal platform. However, that didn't stop Newick from designing the Tremolino which were built in the hundreds with the tiny H16 amas. Something similar would be fun with a more modern look.

Dan