Iggy,
The SkiTow is the exact boat as the Malahini only slightly shorter.
I regret that I became lax about taking pictures of the building of El Guapo.
Here are a few tips I used in designing/building the 'gull wing' back deck.
I started by laminating four, 1/4"thick by 2" wide 'planks' to conform to radius
of the top of station #1. This is member where the latch is.
I am a big fan of making full size templates or mockups.
In this case, I ripped a bunch of 2" wide strips of 1/4" plywood.
Using light weight clamps, I used the strips to form the plan view of the entire
back deck with all of the strips fully overlapping each other at every corner.
After much trimming and fine tuning at these corners , I then glued and stapled all
of the plywood strips at the overlapping corners.
Basically, I have just made an external skeleton framework of the entire back deck.
See photo below (magenta lines)
I then take measurements and angles directly from the skeleton form to make the actual back deck.
After the back deck frame was made, I then measured for the center
rib piece (green lines). This center piece was ripped in half before final
assembly to the back deck frame. I later sawed the 2 longitudinal pieces in
half with a Japanese pull saw.
In short,I find it much easier to work with forms and mockups using cheap, easy to work
with materials (thin plywood, door luan and foam board. Once the forms are right,
it is very easy to duplicate with the 'real wood'.
See the picture of my foam board template I used to cutout my flooring plywood.

