I didn't read this whole thread but wanted to add I tried those Coon Grabber baits and they appear to be working well, no mess and I re-used some, etc.
I just started using the coon grabbers in my DP traps. Had 6 traps out for 2 nights now and have caught 2 coons on them. Probably about average catch rate, but the nice thing is if it's not set off, I just keep on going by it, no need to rebait. And the ones that did catch, I just reset it and done. One of the coons had both front legs trapped in it trying to get to that Coon Grabber bait. Did have a trap somehow get triggered but didn't get the coon and he obviously sat there and tried like hell to get that Coon Grabber out of there, came close and ripped it up a bit, but I just poked it on back down with the set tool and set it back.