Soggy Floor - help needed

[aldo]

The core of my hatches were done the same way so I'm guessing that was the manufacturing procedure back then. Not sure why-maybe all the direction changes helped strengthen the fiberglass?
This is a little bigger than doing the hatches though. I did them with mahogany squares set in West System & filler. So far so good on those.
I have some time to figure this out while do some mindless cutting and scraping. I'll post progress. Appreciate any input from guys who have been there-done that.