[2ndchance]

I beleive it was partially a design flaw and lack of care by the previous owner. I think that 2 1/2" hole allowed water to get up next to the plywood when the boat was laid up and not tended to. I also suspect that the poor deck drains and the foamed fuel tank that had 2 little schedule PVC pipes under it had something to do with it.
I'm going to fix the drain hole and overall drainage problems. Water belongs on the outside not the inside. I would suggest that everyone take a look at how their boats drain and if it is slow fix it.