Bankwalker,
What studies are you talking about? I think you may have confused competition between wild and hatchery fish with the genetic consequences of having wild and hatchery fish in the same place. There is little argument that juvenile hatchery fish compete with wild fish for places to eat, places to rest, and places to hide. The hatchery fish usually outcompete the wild fish because they are bigger and more aggressive. Adult hatchery fish may compete with adult wild fish for spawning sites, but I think that the juvenile life stage is considered a bigger problem. Here is a link on the subject if you're interested:
http://www.dfw.state.or.us/ODFWhtml/InfoCntrFish/sr2qa.htm There is, however, a lot of argument about whether or not wild populations have suffered genetically as a result of hatchery introductions. Maybe that is what you were referring to.
I have a question for you: do you practice C&R? If so, why? If you see no difference between wild and hatchery fish, why not just kill off the wild fish and fill the rivers up with finless wonders?
I guess what I'm asking is this: do you see any other value to steelhead and salmon other than providing recreation and food to you? I'm very curious to see what this board has to say about that.