I do know it is a very demanding/physical hunt and can be extreme weather conditions. I have been on mountain goat hunts and they say they are the most physical hunt there is.
Probably the most dangerous, too. One of the times...and there were very few...I thought I might not make it home to see my wife again involved chasing mountain goats. About the time I realized I couldn't climb any higher, I realized I couldn't climb down. I froze in fear. I'm sure I wouldn't have survived the fall had I slipped.
The Wrangell Mountains are notorious for big sheep as are the Chugach Mountains. The Alaska Range carries some large rams. You could probably do alright in the Brooks. Tough decision.
By God, that exact thing happened to me on my goat hunt thirty years ago. I had no choice but inch upward and hope it didn't get any steeper.
On that hunt we climbed from sea level to 4,000 feet with all our food and gear for nine days. We both got decent goats, but I swore it would be my last goat hunt.
I did half a dozen sheep hunts, and none were as tough--or as dangerous--as the goat hunt.
Your best bet on a guided sheep hunt may be in the Brooks Range. If you happen to put in and get drawn for a Chugach (Unit 14) sheep hunt, give me a call. I know where the rams usually hang out there. Got my nice ram there.
Jim