Skeleton Structure completed

Here I laid out all the rib forms and spray glued them to my 1/8" Luan plywood for cutting.  I then rough cut all the forms with a circular saw and then cleaned up the shapes using a band saw.

 Here is  the stack of left hand side forms ready for gluing.

 Right-hand side glued up

 A view of the clamping jig holding a rib in vertical and horizontal alignment for glue up, this process actually worked quite well.  You'll notice I'm using  a saw-horse type jig, instead of a full table to hold the board in place. The jig has strategically placed cross members that align up with each rib location.

 All the ribs in place, After gluing up all the spars I went back and cleaned-up the shapes with a hand plane.

 Spar's being glued in, I used a small dremel tool with router attachment to cut out spar locations on the deck after glue-up.

Front view of the board, you can see that Rib number 2 was a bit big so Ill trim it down to the shape I want.  Things always seem perfect on paper until you mock them up in full size, so be prepared for some improvisation on the fly.