The Yellowstone River in Yellowstone National Park is widely know for two things: the spectacular Yellowstone Falls, and a few miles of world-class dry-fly fishing for native cutthroat trout. But for all its reputation for easy pickings for big fish, the river can be devilishly difficult, depending on the season and the fishing conditions. Those big, burly cutthroats have seen it all and, at times, they can seem downright jaded--unless you know how...