I haven't been back in a long time, but really enjoyed it and keep meaning to return. I used to backpack all through there and fish the streams.
These are generally tied to ride hook point down, but here's a simple, but really deadly pattern that imitates a lot of the baitfish in eastern streams, as well as one of the more common ones in particular, the Black Nosed Dace:
Print Black Nosed Dace
You can use the same techniques for tying a lot of popular and effective patterns like the Mickey Finn (yellow over red over yellow) and the Trout Fin- a really effective Brook Trout fly in small sizes that imitates the coloration of a ventral fin on brookies (white over black over orange). There are also a whole series of flies including Thunder Creek patterns and Lil Trout patterns use the same materials and techniques.
A simple more generic version is just a white bucktail wing topped with peacock herl. You can also substitute marabou for bucktail for a different look on these patterns.
You could tie these clouser or bendback style if you want to invert the hook. Featherwing style flies, if tied inverted, may have a tendency to foul around the hook bend. Perhaps a small very sparse "wing" of bucktail tied on first before the feathers, with the feathers on either side of the bucktail might help reduce this.