As a resident here in CO I participate in the Ranching for Wildlife program. This allows a few public hunters access to private land hunting....generally for elk or deer. I can assure you that it is not necessary for a private land owner with any kind of acreage to corral big game to keep them on the property. Big game animals have enough sense to know where the pressure of hunting comes from and they will avoid it wherever it takes them. See the downtown streets of Estes Park during hunting season.
My elk hunting this year will be on 77,000 acres of private land with a total of 22 other hunters. It will cost me $50. Actually my son is going to so theres another $13.25. I can step over a few cow pies for that price.