has anyone ever tried using a 5 gallon bucket and putting a lid on it?
Yes...that is the only way I will set a 220 on land here. Not cause I have to, but cause it is the only way I feel comfortable with them. We just had a coon dog killed by one and although both the hunter and the trapper had permission and were legal, it is a bad deal.
Make your buckets just like ya always do, them snap the lid back on with a 6" inch hole cut in the middle of it. I ahve taken many coon with this set up, and the ever present possum of course. I have never snapped a dog of any kind, and it does away with alot of the "reach In" problems that comes with using buckets.
I seldom ever use bucket sets anymmore however, I can build a cubby out of natural objects and do just as well without carryin all the extra stuff.
Another way of makin them dog proof is to use some 2x2 or 1x2 wire, like used for cages. I only make mine three sided and about 18-24 inches long. Set the "cage" in a trail and place trap in it. Ya have to cut the slots for the springs of course. Anchor the "cage" down with some tent stakes or 60 penny nails and ya are safe. This also holds it upright. Also anchor the trap. The top is about 8 inches longer than the sides, 4 inches on both ends. I use these in and around barns with dogs runnin around. Also mainly for 160's as I don't see a need for 220's in these araeas.
Good luck !!!