The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
preferably after dark because these are some skittish fish, redds right next to shore
I tried many years ago to fish for steelhead on the Rifle River, back in my Skidway Lake days (yes, that's a real town, though it doesn't even have it's own Post office). One day I was fishing what looked like a nice hole, and then from the woods emerge no fewer than 8, count 'em, EIGHT guys, in a line, walking right on the opposite bank, right over the hole..."Gee, I don't think I'm going to catch anything...and neither will any of those guys either!!!"
Besides the fact that, in my humble opinion, standing out in cold, wet weather casting like a zombie SUCKS...