I assume you are talking about the Salmon River in the Salmon, ID area as opposed to Whitebird. If you catch it on a warm day you can swing flies in the North Fork area, there is great access and lots of water and good camping. Lower down by Challis it really is kind of combat fishing as the hatchery is right there, you can imagine the circus. Lots of fly guys bouncing eggs on the redds etc. If you do some weather forecasting and time it right, the North Fork area can be great fun this time of year.