Your deck looks pretty good. I tried a similar approach on a few of the center forms, but didn't like the results. I'll next try reducing the peak of the deck some small percentage of the height of the deck from the sheer and running the curve through that point.

> On the Stitch and Glue that I modified (in CAD) I used circular
> arcs through three points at each station. Th three points are where
> the station plane intersects left gunwale, the peak of the deck, and
> the right gunwale. By doing this you will increase the volume under
> the deck because the circle segment circumscribes the triangle it
> replaces. You can click the link below to see what I'm talking about.
>