I'm trying to come up with a reasonably-priced solution for housing and thought somebody here would have some ideas. I have to keep up to 10 holstein calves from about 150 pounds up to 600 pounds. I have about 3 acres of level pasture to keep them on, but I don't want to fence it in. I want to rotate them around the 3 acres with a movable shelter and fence. I'm thinking about getting a round pen of about 12 panels and building a 3-sided shelter on runners that I can move around with a truck or a tractor. With the shelter inside the round pen, I can shift the round pen and then drag the shelter as needed to keep them out of the mud/manure. Anybody use a setup like this? Is this going to be a big pain to move the round pen panels around? I know it's more work than just fencing the 3 acres, but because of a couple reasons, I'd like to stay un-attached.