Tuna fish is the best bait I have found for skunks. They love it. be certain to place the bait where it has to go all the way in the trap to get it. I use a small can wired into place.
My hound and I encountered one when going to the backyard one night but she kept her distance and we survived. I trapped it during the night and number 1 Grandson got some target practice in the woods next day.
She does not ignore the poor racoons that wander by however.
I know there are a number of skunks in the neighborhood but (knock on wood) they apparently have an agreement with my hound cause after trapping a few 4 years back they no longer come around.