Similar progression i went through. Try foothold traps next and you will catch a couple more.I have tried peanut butter. They're attracted but won't go into the trap. I've also tried marshmallows. It worked once... Tuna fish, wet cat food, canned chicken... I've tried a bunch of different baits but the live trap is mostly useless at this point.
I wasn't aware of this type of trap so I google searched it. Just placed an order for one on Amazon.com. Thanks!
What kind did you get?
Duke 0510 Duke Coon Trap, Pack of 2
When you get them make sure whatever you use as bait goes completely beneath the trigger on the inside. You'll see what I mean once you have them. You will also need to anchor the trap to something solid or in the ground so they don't run off. Set them as far away from your coop as possible where you think they're coming from.
Like centra said those traps are fired by pulling on the trigger assembly within the tube. Cats can't manipulate their paws like a raccoon. No worries about cats. I have outdoor cats too. Plus use a sweet bait/lure, cats won't even be interested.
Hens go broody when you don’t want them to… and won’t go broody when you do. 
