Take a flashlight and look inside the walls of "sharecropper's shacks" if you find some and it looks like the walls have high access points to the interiors.
Many things, including canned food have been hidden and had to be left behind for a variety of reasons.
Also take a flashlight to the attic rafters, you'd be surprised what has been left stashed up there!!!!
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QMC, USCG (Ret)
The best luck is what you make yourself!