I guess the question has to be what 'Poop' is in this case.
If Poop = Katrina, I'd be happy with open carry of a large caliber handgun. Remember there were also neighborhoods banding together and not being disarmed or forcibly removed. I like the idea of a handgun as it's out of the way but quickly drawn and put into action.
If Poop = lots of shooting aka Zombies/Invasion/Civil War, I'd carry a rifle on a Giles sling. Semi auto, magazine feed, rifle caliber, setup for short range use. Strangely, I don't own this gun. My AR is setup for Camp Perry DCM use. I love pistol caliber rifles. The FN isn't working, etc, etc. I may have to fix this. I figure a 3-gun rifle would work well, no?