About a year ago, I got interesting in learning to use 160 and 220 sized body grips for coon, even though they are frowned upon around here for dry land. You can use them, but very restricted. As in 6 feet off the ground INSIDE a building. That still works for me as I have ID as many as 15 different coons in the barn in one night. Got em all trained up. They all come for less than 1/2 cup of residual cat food the barn cats don't clean up. First come, first served, so are pretty aggressive into the food when they get there. Otherwise, they get nothing.
Anyway, set up some tests......4 short pieces of 2" PVC pipe stuck in a row in a board with different bait down each pipe. Figured if there was a preference, they would always seek it out. Bait was cheap dry cat food (aka, "barn kitty"), then laced it with a variety of scents. Fish oil, liquid smoke, sweet bbq sauce, vanilla, anise, bacon grease, etc. Then some concoctions that required mixing. Cat food + bacon grease + bits of licorice. Another with pasty bait with sardine base, flour, Certo, anise, etc. And lastly plain old dry. The result? They always went for the first one they came to. So you can lace it up if you want, but don't need to. Something about the balanced diet of plain old cat food, they instinctively know it is good to eat and good for them. To a coon, must be more addictive than crystal meth.
Did observe that once you brought fishy into the equation, barn cats took notice of it. They didn't pay any attention to anything else, but once fish showed up, they were in it.
Dry cat food in a soup can, with bacon grease poured on top......then can and all down a dirt hole will attract anything that wears fur. Coon, skunks, possums and red fox take turns lining up to try pulling that can out, where they will wallow it around until it's gone.
Coon trained to dry cat food are like shooting fish in a barrel with a cage. About the same with DP's or a CS. Body grips, a different story. Watched game camera videos of dozens of them work the bucket and box sets with BG's (jaws wired so trap would fire but not close) and could not believe how deep they could get without setting one off. Not good. With late summer kits, some could even get deep into a 5 x 5. Some could get in and out of a 220 and never fire it at all. Likely as not, would have suitcased most that were caught.
Best configuration I found was the vertical box, with opening at the bottom. Opening spaced only 4 to 5 inches off a solid deck. Coon would crawl / squeeze under, but to get into box from below, would have to be pushing forward with back feet, pushing up with front feet when their head reached the triggers. Would get a perfect neck strike every time. Coon and trap dropped out the bottom of the box, and that is where you would find them. DRT.