Bushwhacking is allowed no problem there. Like spotlight said it is easier in the winter and less chances of run ins with the snakes. Fred you may want to try and squeeze a trip in during the next couple of weeks before all the doghobble and stuff pops up then it can get tough. Don't know if you have ever been there but there is an interesting site http://www.griztrax.net
that has all kinds of detailed accounts of bushwhacking trips off trail in the smokies. Another good blog with many off trail stories is Jenny Bennet's blog:
you can go back in her archives and read all sorts of smokies off trail stuff going back to the 1980s.