I did not take a picture of the first inflation test; the bag filled up and popped off the cloths pins pretty quickly.
I used a foam core model with clay bags for form, cut a pattern off of it, and blew it up to fit the real craft. I suppose there are 3-D drafting/model programs out there, but I'm more of a sculptor and artist at heart.
Note: rear bouyancy butt (blue part - another innovation) will be covered by the rear bag yet to be fitted.
If I could figure out how to get a government research grant or find a rich investor I would develop this thought/design further.