Love this idea!
I think I would do a few different things
1. Get rid of all the wood in the boat!!
2. really like the unsinkable idea.
3. have a model the adds 3-5 inches of height/headroom to the cuddy
4. have a 25 foot version with the hull deeper and a little more beam. The top side kind of like that of a John Allmand 23.
http://i.ushipcdn.com/resize.php?pat...pg&w=270&h=210