If you contact the fish and game they will give you a harvest map of where the last 10 years or so of sheep have been harvested. Should help you get started. Looks like either from the river up or from the top down. A few airstrips to choose from as well. I guided on the river for the better part of ten years so it's tempting to have a river expedition experience but river logistics can be a limitation. If you have time do a week from river access and a week from fly-in. I'm applying for 27-2 but might eventually try for 27-1. Also if you contact all the biologists some of the previous people who harvested have made their contact info available. Lots to learn! Good luck, you will need it