Troutwag,
I think you will have a ball around Livingston. Are you going in early or late July? Late July will mean hopper fishing on the Yellowstone.
I love Nelson’s. It’s small, but truly a beautiful little creek. Try to get Bob Bergquist for your guide. I think he actually lives on the Shields. He books out of GA’s Yellowstone Angler and is a top-notch guide-especially on the local spring creeks. Regardless of who you get for a guide, pick his brain for spots to fish during the week you’re there. Usually they’ll give you some decent places off the beaten path. There is so much water and the conditions change so much, you’re better off not having a too rigid game plan. Be flexible and fish where the conditions warrant.
Have fun!