Are you sure your problem is raccoons? The trap has to be sized for the predator. And it depends on how trap savvy the animal is. That's another reason I dislike a catch and relocate approach. Not only do you pass on a problem to someone else, the problem is harder for them to deal with.
If you have the type of trap with openings on each end, leave one closed. All that extra end amounts to is an extra escape route.
Instead of staking my trap down, I wired it to a piece of plywood so it cannot be turned over. Just a different way to go about it.
I built a box that fits over the trap. The only opening is at the front door to the trap. The animal cannot approach the bait any way other than going in through the trap door. And I put the bait behind the trip plate. While I have never caught a skunk, I think one benefit to my box approach is that it may give you a chance to deal with a skunk without getting sprayed. You still have to look inside to see what you have and that can be real exciting if you think it might be a skunk.
Many different ways to approach it. Good luck!!!