Potatoes are my favorite veggie to grow as well. But, I do not hill mine. I dig a trench, lay out the sets, and fill the trench. Then, I simply pile the mulch on them. Never have to weed potatoes, and I feel like the Queen of the world when they bloom, and I can reach under the mulch and steal a few new potatoes while leaving the rest to continue maturing. By far, the world's best potato IMHO is "All Red" or "Adirondack Red". I always try to save some for the next year, cause they are hard to come by.