Free: Contests & Raffles.
For the cameoing part, this stuff is awesome: https://blindgrass.comIt's expensive but it is synthetic so it does not absorb water and it lasts forever. It saves some time in the morning gathering native vegetation.
I have had a couple of manufactured boat blinds (Mudbuddy QuickFlip and Beavertail) which used Cordura. It has worked well and has been reasonably waterproof. Add grassing straps and you are set to go.And I second the earlier post about BlindGrass. I have it on my layout and panel blinds and love it. I do not have it on my boat blind because I so infrequently use it anymore.
Put a little bluebeam plan together. Not sure how I want to lock the blind into place in the "up" position.
A few things to think about. A roof can add concealment from above but will also create the 'dark hole' in front. Nor having 360° viewing can also become PIA. Be sure everything is some form of quick disconnect. It is inevitable you will need to pull up and chase cripples. Not even easy in an open boat.
How did this turn out? I’m considering a similar project.