This is the spinner kit I'm going to use on 60 gallon plastic drums, I've bought two thus far to test out and thus far they are working well:

https://moultrie.factoryoutletstore...tegory_id=78119&catalogitemid=445064

Just cut a 3" hole in the bottom and bolt it in. I'm going to put a short piece of 5" or 6" diameter PVC around the spinner area to try and keep the coons from tearing it up, I think it will work.