I've read all of the post so far, and I tend to agree with most everything said. I run into a similar problem when hunting in the snow belt, since we can get 3"-6" of snow in a heart beat. I've had to track deer sooner than I would have liked to, because it started to snow. Tracking in the snow is normally a great advantage, since you can follow the track even if the blood is just spotty, but even those can get covered up with the new snow.
From those who much is given, much is expected