Fished Montana yesterday. There weren't to many Rainbows but a buddy and I were pretty successfull. I actually got three bows to rise to dry fly, so that was pretty badass! I don't think the kings were dropping eggs yet, but beads were working on a few of the bows. I don't think alot of Rainbows have pushed into the upper yet, I'm gonna hit that up again in a few weeks after the chums have pushed in.