The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.
I was thinking about going to the Chena river. If I do catch pike instead then I still won't complain, it will just make the rare sheefish more special when I do catch them.
Jason can address this much better than me, but I believe that pike and sheefish hold in different kinds of water. I don't remember sheefish mixing much with other species, either.