If you’re willing to make the trek into the canyon here the action is good. No need to get out early as the mid-day hatches provide plenty of action. Cast 10-15′ above your targeted fish to get your presentation on the water well upstream of them. I like 10-12′ leaders here to avoid spooking the surface feeders with your fly line splashdown. Elk Caddis, Parachute Adams, and midge patterns in #18-22 are best. You can attach a short dropper nymph about 2′ or so to your dry when the fish aren’t feeding on top. Good patterns are #18-20 copper tiger and zebra midges and #20 PT’s with or without flashbacks.