Huntinnut, i sent you a private message.
I know the Sheepholes well and it is the toughest area you will ever see. I've helped Terry Anderson with hunters in the unit and we killed some good rams and missed better ones. I know of other hunters who spent 30 plus days in the area and never saw a legal ram. Practice long range shooting, 500 yards plus for this unit. Getting within close shooting range of rams is going to be tough.
I wouldn't focus too much on the aerial surveys, because you won't find the rams during the season where they were spotted during the surveys. Terry does a great job and his price is actually cheap once you see the area and get a chance to put some miles on. I may sound biased, because Terry is a good friend. I am being honest though. I'm not sure if Terry wants to book a Sheephole hunter. If your friend does want to book, I would call Terry ASAP. If your buddy waits until later in the year, Terry most likely will not take him due to other sheep hunts that he has going on.
One thing that I will say is that your friend had better be in good physical shape.
D-13'er is also a good friend and he was right on the money about there being no roads into the area.
Good luck...