The best way is to have a pot big enough to dip the pig in. We used to use the tractor to hang a big hog and we had a huge pot that we built a fire under and would dip the hog in whole.
I smoke a lot of small wild hogs, but we skin them. I just wrap the quarters in foil after the outside is nice and dark. No problems with it drying out.
"So he cocked both his pistols, spit in the dirt and walked out in to the street."