SKunks are easy, toss a blanket over the trap and wait about ten minutes, then slowly roll the trap over...open door... and step back. skunk will slowly come out and run away.
As for using live traps.... good luck catching fox or 'yotes. Coons, oppossum, occasional skunk, lots of wild cats, but the good stuff doesn't seem to fall for a live trap set-up. It's worth a try, you might get a few.. but it'll be tough.
-JAke