They like these.
A few experiments. Lead eyed Muddlers coated with UV clear coat.RG
Just for you Trapper Have you tried the Loon UV coatings yet? The stuff is so much easier than screwing around with epoxy. The only thing I've found is that the battery powered UV lights don't give a solid cure on thicker coatings. I put them on the windowsill in the sun for a little bit to really harden them up.RG