Hi Matt!
I live on the snake but not that far south. Its excellent fishing here in the treasure valley and where you have been invited is known for the big browns. If and when you go, take a collection of flys and nymphs for those fella's and dont forget your bass plugs, you'll have a ball with the small mouths that this river is loaded with! there is still plenty of water in the snake right now so fishing shallow is out of the question. Its also clean water where you are headed so the fish tend to bite more on darker colors in shaded areas such as blacks and blue lures. Have a good trip, dont worry.. you will nail em and you'll love the country.
best regards, Vince*