The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
Sounds like an interesting baetid emerger, Sayfu. What color bead do you use?
Bruce - You've pretty much described the original floating nymph. It was one of the first concepts proposed many years ago to address the reality that trout often take emergers, a tweener stage between nymph and dun at the surface. They've largely fallen out of favor out here, and I don't think much of the pattern as it misses on several counts imitating what's actually going on with the critter. I would advise a nymph like my Ripe Nymph or Tony's Bubble back CDC nymph to fill this niche, the latter tied on a light scud hook. There's only so much space in my box, and I think a dozen patterns to fish when this bug is active is ample:) Though I've long since abandoned it, I'm a continent away so what do I know? The most valuable opinions are those of your PA buddies (Tony, Louis, and Eric) and of course, the trout!:)