Before I built my skiff six years ago, I epoxied pieces of exterior plywood
together to fit the back of my pickup. I wanted to try a novel method of
joining plywood and this seemed like a good opportunity. Since then, the
truck has been outside most of the time winter and summer. The epoxy is
yellowed but it still has plenty of strength. Amazingly enough the plywood
is still in pretty good shape in spite of zero maintenance (no paint) and
having had all kinds of junk thrown on top of it. Don't worry.
Dave