I hunted the Selkirks a few years back and contacted every hunter from the two years previous, they were by far the best source of information. On the other hand, the moose were everywhere in the Unit and it's easy to get hung up on a certain spot just because someone killed a big one there last year.
Drop me a PM with your address and e-mail and I'll send you some information. I wrote up the notes for my hunt and you may find them informational for your hunt as well.
The number one piece of advice I'd give is to cover ground, followed by cover more ground. They're very nomadic and roam all over the place. It's just a matter of catching one in the open somewhere you can see him. 49 Degrees North is supposed to be the best unit because it's so open from logging you can actually see animals.
Just be patient, oh yeah, and cover lots of ground!