I have seen a lot of sheep on the southern edge of 681 (just north of HWY 114) and see them every time I travel from HWY 50 and turn south on HWY 114. Dunno it this helps or not, I'm not a sheep hunter.
Hell go for Georgetown unit. I can't draw it for 2 more years. You wount find a better unit. Let me know if you draw it, would love to go along and help spot.