Little more progress.. Had to work all week so just got back on it yesterday. Got it all plumbed up, and installed the poly-foam. In the process of laying a couple layers of glass all the way from side to side and front to back over this to try and completely seal off the bottom deck. Next I'll do two part foam in the gunwhales and carve it out for a really wide tray, then glass over all that.
I didn't really plan for this foam to be there for support purposes, but I can stand in the try like it is, pretty damn strong stuff.
The idea is that I know for sure the through hull lines, etc will all leak sooner or later, probably sooner. Hopefully I can keep the bottom remotely dry with some drains and this non-absorbent foam, and get the gunwhale areas sealed as best I can. We'll see how it goes. Back to laying glass, more pics coming soon.