Chartreuse works great for me in the early morning, then I switch to darker colors and smaller flies. Jim Kerr has a theory (if I remember correctly) that low-water, lockjawed coho can be coaxed into biting by throwing small flies that look like euphasids and perhaps other small arthropods that would trigger their eating instinct like when they were smolts in the rivers and estuaries. This technique worked great when I fished with him two years ago on a gin-clear Sol Duc. We were also swinging through deeper runs with small, boring flies consisting of a small clump of bucktail (orange, brown, red) with a couple strands of flash tied on a 1" copper tube. Cast straight across, throw in a big mend to let the fly sink, and twitch on the swing. Ian and sopflyfisher: sounds like you guys are tying a variant of the Christmas Tree pattern. Works well for deep holes on the Sky.