There are a good number of fish in the upper Rogue. Of course nymphs will always work...stick with big stones at the top and a egg pattern below. Once the sun warms the water enough to get the bug activity up you might switch to a smaller nymph below.
Swinging has been bringing some results as well. I like to find the water the sun hits first. Then swing it low and slow, using up to a 5 foot fluorocarbon leader to keep my tips away from fish in the clear water the Rogue is experiencing now. I match the color of fly to conditions. I have been fishing my wired flies.
The Rogue is fishing well, but I predict it will explode in the next month as we get spring rains, so get out there.