I'm after mulies too. I'll shoot the first trophy I see, I'm not too particular about whether I shoot a mulie or a white-tail as long as its big. I've only hunted one river bottom unit, and access is no probelm at all for me because I know all kinds of land owners there. Access would probably be very difficult for a non-resident, though.

There are river bottom whitetails all over the state, but to be honest with you I've never hunted them in any other area. I've shot does up around Sheridan, and there are big bucks runnin all over that area in the creek bottoms and brush, but its nearly impossible to get access unless you're willing to shell out a lot of money. (If you are willing to shell out the money, PM me and I'll give you the number of an outfitter that will get you a big buck.)

One of the other members from Wyoming could probably do a better job of answering your questions.