Hi, I'm new to this site too but was excited to read your post. I've been playing with the idea of a convertable boat/camper for years. I've done extensive research and found that it has been tried multiple times over the years. Some home grown and often by commercial outfits.
My idea would be to use pontoons instead of a boat with a hull. The last thing I want is a leaky hull and a pump running all night!
I have a lot of ideas and plans drawn up. I retire in 29 months and 6 days and hope to get started soon.
Let me know if your'e interested.
Sam