The Swift River should be a controlled substance. Couldn't resist going again yesterday and might go tomorrow. Air was almost 40F and water was 46F. Didn't see more than a couple tiny insects and very few rises (stray pellets?) but a size 20 BHPT with a size 20 and smaller softhackle dropper did the trick. When they got tired of the red SH I took a couple on the olive and one on a small pink egg. This is one of my small soft hackles. It is nothing more than appropriately colored (red, black, olive, yellow, etc.) thread, thin gold wire and two wraps or less of partridge hackle. The hackle is a little longer than ideal, but on a 20 or smaller fly, it is a challenge to find and wrap a proportionate soft hackle. The fish don't seem to mind.
For a Serendipty, I substitute elk hair tips. For a midge pupa I don't use hackle, just a couple wraps of peacock herl or ostrich herl. A quick tie and effective. I tie the soft hackles in slightly larger sizes (16 and 18) to use as droppers throughout the season.