From the Cross F Ranch trailhead go south along the old Beeline and then take FR 393 to where the AZT crosses the road take the AZT north a few hundred yards and then head northwest and pick up the old rancher route to Brunson Tank, down to Upper Sheep Creek Spring and return on AZT / LSMT.
WARNING! Hiking and outdoor related sports can be dangerous. Be responsible and prepare for the trip. Study the area you are entering and plan accordingly. Dress for the current and unexpected weather changes. Take plenty of water. Never go alone. Make an itinerary with your plan(s), route(s), destination(s) and expected return time. Give your itinerary to trusted family and/or friends.