Denali, if there's any snow and you are the least bit squeemish about driving some seriously nasty roads don't bother with shoemaker grade as it claims a vehicle now and then. It can get really bad. But usually if there hasn't been any snow for a while the road isn't all that bad. Make sure you have good tires because it's rocky and steep. Iv'e personally had to fix a couple flat tires down there.
As far as fish go, the whole Rhonde should be loaded with fish so cottonwood might be just as good. Definately call boggan's to get the update on the water clarity. They are right on the river for first hand info. Also, don't forget to stop in and grab a pop or coffee for the road.

Good Luck,

Duke