If any of you who read this are skinners, I've got a tip for you that you may or may not know about, depending.
There is a cave at 46,55 in the Storm Peaks, containing both Jormungar and Cavedweller Worgs. The Worgs in particular are on an exceptionally fast respawn timer. You can literally kill and skin without stopping.
These mobs are also sufficiently high level that, unlike many others in the game, they exclusively drop Borean Leather, and not the scraps. I got six stacks in a bit over an hour.