Your fly is elegant and you know it fishes well. I have a good friend that tied one up for me and I really like to fish that pattern. As for the Hard as Nails, I think you will find it as a good fishing head cement. It's what I have used, the only time I find that it clouds up is when there is moisture in the air when I am tying outdoors, and the moisture sneaks into my wing butts. Otherwise, no issues.