heres a quick and easy one for ya.
I used a #2 lsp. for this demo, any trap that will hold a coon will work.
step one, set trap and place in spot the set will be in.
Bait with your favorite bait
take an old rim from a car/truck/what ever and lay it over the trap and bait. make sure you center the pan of the trap in the hole of the rim.
the best part about this set is you don't need to staked the trap. a coon isn't going anywhere with the rim on his arm
Just make sure the trap wont go thru the hole in the rim
Hope you try this set and good luck.