Next step then:
I am thinking in terms of ww hull 2 sheets of ply long (just under 16 feet) and
lw hull 3 sheets of ply long (just under 24 feet) - no rocker on either.
Single mast as mostly single-handed - rotating - fixed booms extending in
opposite directions so that I can experiment with different rigs, marconi, lug,
junk, square, easy.
Width 2.5 metres for towing - narrow but ww hull would be heavier than
Elementarry which should compensate to some extent.
Slim hulls with adequate displacement achieved by deeper rather than wider.
Still sounding alright?

--- In harryproa@..., Rob Denney <harryproa@...> wrote:
>
> G'day,
> No problem at all. I have built a few flat bottomed proas, all worked
> well. Main decision is whether to put any rocker in. I wouldn't, as
> the boat then tends to sail on the front part, so you are more nose
> down than otherwise. I guess if you got enough weight aft, it might
> sail on the back part, might even plane, but if it is skinny enoufgh,
> this is not necessary. Let me know the dimensions, sail area,
> materials and payload and we will see what we can come up with.