Book excerpt: The most important hatches and recommended patterns, along with key fishing techniques and the best times of year to fish there Interviews with a stunning collection of Yellowstone Park veterans in the know, including fly shop owners Bob Jacklin, Craig Mathews, John Juracek, Richard Parks, and John Bailey; writers Tom McGuane, Wild Bill Schneider, and The Drake magazine's Tom Bie Best spots for Yellowstone cutthroat, westslope cutthroat, Snake River finespotted cutthroat, grayling, rainbows, cuttbows, brown trout, brook trout, mountain whitefish, and Mackinaw lake trout