After all the good advice from you guys, I made a closer shooting position to snipe the evil possums! I had an old tarp that I draped over the fence and put a piece of wood down for a floor. There were some bricks under my deck and I braced my flooring so it can hold my large rear!
Just like clockwork, I came up from downstairs to the ringing of the dinger! A glance out the window indicated a possum in the bottom lands. It took me awhile, but I got on my boots, found my gun, loaded it and started down closer to my target. I was sneaking along just fine until my boot went through a crust of ice. He looked at me, but I didn't want to take an off hand shot.
He'll be back! I might go outside and wait for him

It has been SO cold here, and it actually snowed! The only thing on the game camera the last few days have been SKUNKS! Not even the cats are silly enough to come out.
I'm thinking tomorrow is my night as the weather shouldn't be so nasty.