I've killed a couple Barbary sheep, but none with a bow. I've killed them all in Unit 30, there are tons of sheep in that unit and if you put on the miles and glass, you should have no problem finding one. In January I would recommend to glass the sunny side of the mountain in the mornings, they will be sunning them selves. These animals don't stay bedded very long they will move all day. Look at rougher parts of the mountain and for some reason I spot them closer to the top. I've always like hunting from the top and Glassing down I've had more success that way since they always seem to be bedding on the top of the shelf or walking on it where you wont be able to see from the bottom. Not sure if your looking to make a scouting trip but, The North Rim off Forrest Road 67 would be a good place to start. Around Indian Tank and Little Dog are good sheep area. You will have to walk to the Rim since most the road have been barricaded by the Game and fish. Good luck and hope this helps.