Ok the update SNice was looking for ... booms, shaped and temp tacked in
place with hot glue ( epoxy later ).
Yep it is sitting on it's tail surfaces in the 2nd shot . They are very strong .
the pink foam is very strong over short distnaces . add soem wood and very strong .
it floats / glides with still a touch of nose heavy .
I may not add a active rear elivator , only a trim surface. (still pondering that one ) Leaving picth the canards, but that means less pitch controll at low speeds , so prolly not.