Re: Building a cabin on a 20' open boat.
I have to say that's a great idea for the pacific northwest to stay dry, but that's not the purtiest cabin I've seen
I would wonder a little about the weight up high, not sure what material you used but it looks a little heavy/over-built. I'd worry about little about wind and waves making it a little unsteady.
Let us know how it goes after a sea trial.