A glue that I have had really good success with
is BOND 527 multi purpose cement.I have used it on plastic eyes I glue to Puglisi's and deer hair flies.It is not advertised as water proof but rather water resistant.I have had better luck with this stuff than either super glue or epoxy--at least the 5 min variety.I use to get this glue at Wal-Mart back in the craft section
near where they have the hot melt glues.