I have a few years worth hanging on the wall at home.... While skinning the squirrel I pull the skin all the way clean off the tail bone. Then I cut the Tail off the rest of the skin. Then I cut a little slit in the top of the tail, slide a shoe string through it, and let it hang there with the rest of them. They quickly dry out, I dunno if that is the proper way, but they hang in my gun room. DOn'ts smell or rot. And some are about 10 years old.
-Jake