How much land? Blacktail are browsers so food plots aren't exactly necessary. Fruit trees, vine maples, black berries, ferns, young fir trees, salal, wild roses etc. The list goes on. Keep dogs away, shoot coyotes and control brush. If they don't have open areas close by then create some pasture areas, but like I said. Food plots per se like what a whitetail would want aren't really necessary. Plant good grass with a clover mix. That would be a good start. Keep the does happy and they will stay close by.