I live hunt and guide in NW Wyoming. I haven't hunted the units you are thinking of, but the same things apply.

If I leave a kill out overnight I expect to find a bear on it or that one has been there.

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This bear is on a elk that I had to leave overnight. Moving the meat away is good, but I've had bears pack the meat, and actually the horns once too, back to the carcass and bury everything. Move if you can to a place you can see from a ways off.

Once a bear is on a kill they are reluctant to leave. Several people and horses helps, but even then they don't move far. A lone hunter going back to a kill could get exciting.

We usually see several bears every fall that aren't on kills. And tracks are common.

Coming nose to nose with a bear will get your blood pumping.

If you are camping there is a whole set of rules you'll legally need to follow.