Tried it on a coon a few years back. Maybe we didn't do it right but we inserted an air compressor in a tiny hole in the hind leg and blew it up. It inflated to the point where the air came screaming out it's nose and lips. Then tried skinning it and it didn't seem a whole lot easier for some reason.
I had a coyote blown up like it was ready for the Macy's Thanksgiving day parade.
From its eye sockets to its toes it appeared as though the skin was just going to peal right off. In reality it made no difference. I don't have an explanation for it, but it didn't make a noticeable difference when skinning.