It is extremely strong just as plywood, the epoxy is simply a waterproofing agent. I have not had to go back at all other than some touch up epoxy work from where squirrels chewed on 2 small areas over the winter - I hate wildlife...

I added a EVA pad this spring and it looks great and my riders love it on their knees when getting back in the boat. Highly recommend, no modifications other than don't use liquid nails on the glue up!