Rich, Tromping around the high country with a fly rod is a blast. Its a good change of pace from steelheading all winter and summer. Dont worry about technical Orvis crap. Either skate size 10-14 misquito, caddis, humpy dry's or dredge bottom with small prince nymph bead heads, and you'll have plenty of action. like mentioned earlier, dont expect any monsters. Most resident rainbow and cutts are 6-10", so bring light gear. My biggest is a 17" rainbow, its about the equivalent of a 20+ steelie in my book. The growing season in some of the headwaters is very short, and topped with a harsh winter could mean lots of small fish next season.
Remember to pinch barbs are release em'
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"I have a fair idea of what to expect from the river, and usually, because I fish it that way, the river gives me approximately what I expect of it. But sooner or later something always comes up to change the set of my ways..."
- Roderick Haig-Brown