Got it through my head that flotation was not so much trouble to add. And it really wasn’t. Just one of those things I guess I found a distasteful job and wasn’t too excited about doing. But in the end it was quite easy, quick and the added peice of mind is well worth it. I used 1-1/2″ foam board insulation from Home cheapo. Cuts so easy with the little Japanese saw and final shaping was done with a rasp.
You can see my interior colors in these pics. Or the best they can be seen under my lousy shop lights anyways. Hope to get her out in the sunlight pretty soon though.
The decks should be glued down this weekend, I hope.
Getting closer!
13' Stick-up sharpie 
Tim, She is looking very nice! With a deck she will be ready!