We're keeping our cows in with just one (hot) wire, moving their paddock daily. We know very little about sheep except that Katadhin seem like the ones that make most sense for us and we like the idea of grazing them with the cows. We have more land than the cows can cover, but it's still in a very early stage after years of poor management, so it's a lot of area but not yet a lush pasture that I hope we can someday develop.