watershed. it's designed for fly tying.
Works pretty good.
Doesn't seem to affect the feather much.
Just run a "bead" of it down the base of the fletch.
it wicks right up to the tip.
Let it dry over night.
Doesn't smell once dried.
And seems to stay on well after many shots.
Dries completely so it's not "slimy"
Next day you can run it under the faucet and the feathers stay good.
If you get em soaked and then TRY to mess up the feather you can..by squeezing them tight to the shaft or stroking them backwards with a lot of pressure etc.
I've been using it for years and have been happy with performance on very wet days.
And been happy with sitting them upside down in a bucket of water, pulling them out and shooting immediately.