Foamy Hatch Construction

I've been digging through threads looking at pictures of how people have built their galley hatches and I am sure I am missing some.
I'm going to collect post links here in this thread to galleys people have documented their builds of. If you want to link your own that would be awesome.
It looks like most people have used some sort of internal wood framing? I presume this is to hold the curve. When building the bikedrop I managed to get my test front curve to hold shape without any wood even with the dog sitting on top of it. (35lbs on a 12"radius half circle) even without canvas it held. I am certain it would have been stiffer with canvas. It flexed a bit I am trying to decide if doing something similar (cutting carefully planned kerfs and gluing them shut) and then canvassing the inside and out will work. I know I need some wood blocking for latches and lights.
My other thought is just build a wood/plywood hatch and cover it with canvas so it looks and paints up the same but isn't actually foam.
ghcoe's #1 with the car trunk like method
ghcoe's #1 with the car trunk like method where he actually builds the hatch
MaryC's Grits with wooden frame inside
Mel (atahoekid)'s Road Foamy has Vertical doors
I'm going to collect post links here in this thread to galleys people have documented their builds of. If you want to link your own that would be awesome.
It looks like most people have used some sort of internal wood framing? I presume this is to hold the curve. When building the bikedrop I managed to get my test front curve to hold shape without any wood even with the dog sitting on top of it. (35lbs on a 12"radius half circle) even without canvas it held. I am certain it would have been stiffer with canvas. It flexed a bit I am trying to decide if doing something similar (cutting carefully planned kerfs and gluing them shut) and then canvassing the inside and out will work. I know I need some wood blocking for latches and lights.
My other thought is just build a wood/plywood hatch and cover it with canvas so it looks and paints up the same but isn't actually foam.
ghcoe's #1 with the car trunk like method
ghcoe's #1 with the car trunk like method where he actually builds the hatch
MaryC's Grits with wooden frame inside
Mel (atahoekid)'s Road Foamy has Vertical doors