Epoxy?

[Preston Singletary]

A year or so ago I started using a product from Angler's Choice called
Softhead.  So far, it has proven to be very durable.  It's thick enough out
of the jar to flow well yet not drip and, since it's water-based, it takes a
while to dry thoroughly (2-3 hours).  So far it shows no signs of yellowing
like epoxy does.  I just apply it and hang the flies upside down by the hook
bend.