There are some, have a look on Boat Design where this subject has been discussed at long length at various times, there was a really good thread on a 20 foot racing tri using an A class or F18 hulls as the donor. I think it was a topic by Corey, perhaps search under his user name.

General consenus is that the early beachcat hulls are not good donors being too heavy and too little bouyancy foward of the front beam ( remember a tri has its bouyancy a long way foward to prevent the diagonal pitch poling which is the way most tris go over ). My guess is that the Blade will be better but you may need to step the hull foward further than a dedicated AMA.

Sadly I had decided that the need for a cuddy of some kind and some over nighting would be planned that I gave up on the idea of a Weta on steroids and was probably not what I needed. Went the whole way and have now bought a set of F85SR plans, hope to get started in the new year but then I have been saying that for a long time