IIRC, the person who started this discussion had an acre. So an open heap should work fine for that. The pile gets hot. Then when it cools off (or too much rain douses it) tear it all down with the rototiller and then pile it back up again with a pitchfork. When you add something nasty to the pile, bury it a little. The only vermin I had a problem with was fire ants.
For a typical home gardener, two small piles right next to each other, enclosed on 3 sides with wood pallets on edge to make an "E" (someone mentioned this a day or two ago) is the best system I've found. When you're just getting it started, make the pile in one side and then every once in a while turn it good by forking the compost over to the other side.
Best regards, Bob