I found this also.
337 lbs of Potatoes! NO digging, NO watering, and VERY LITTLE work!
https://www.youtube.com/watch?v=GlratwBT5OI
I have friends that told me they do something similar. They went and got free mulch from the town, laid the potatoes on the soil, covered them with a thick layer of mulch, and when harvesting, just pull the plants up nice and clean.