You might want to make a mental note to yourself. If you ever need to dig a trench and you think to yourself, "no big deal. It's not that far. 2 feet down is not that deep. I have a shovel.", take that moment to punch yourself in the face and rent a trencher. Seriously. You DO NOT want to dig it by hand. Especially in winter when the ground is freezing and thawing in turn and the soil is 75% clay. It is a bad idea and you will cry.