You've got your answer already.. I was just going to point out that people who build kayaks and other craft using the epoxy saturation (WEST) technique generally apply varnish over it all as a UV barrier to prevent the epoxy from going opaque over time.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)