I just cut my floor out over the winter because it was extremely spongy, so I re-cored it and reglassed the over the core from the bottom. Anyways, from what I saw when I cut it out is that in about the middle of the floor between the engine and wooden bilge cover, is about a 2 foot square pile of cement like material (I think from talking to someone at TPI is vermiculite). It goes from the bottom of the floor to the hull, and seems to be used as a support piece for the floor. The hose for the gusher goes through that stuff and would be next to impossible to remove, at least without cutting out the floor. The white hose is for the cooler drain.
Anyways, the vermiculite covers a big area, and would be pretty hard for water to get by, I assume thats why its building up on you. I wonder if with the boat healed a little, and some weight forward, if it would possible go around the vermiculite?
Hope that helps....
