Someone here is prone to bragging. This looks very nice to my untrained eye:
I have very good industrial sewing machines, live in Redmond and make it to Portland periodically.
Do you have need for any custom sewing for raft gear?
In a couple weeks I could work on what you'd like and send it to you for nada with hopefully some frame welding considerations for later.
I have a decent supply of corduras, some nylon fabric and some mesh. Cords, tapes and webbings. My bar-tacker makes straps easy.
I can't do water-'proof
I would need dimensions and examples of what to mimic.
This post can serve as an invite to others with idea exchange needs.