RE: Info on sheep in BC...
According to the REGS Region 7A, in particular 7-37,7-39 to 41 and that puts you in the Williston Lake area. As for 7B - 7-36,7-42, 7-43 which is the same general area as Williston just East and the final area is a bit North. The areas in Region 6 are west of this area and north west (Deas Lake and Telegraph Creek. Thats a long way to go scouting, not to mention where you have to go to find them.
As for obtaining info on where to go I would contactyour local gun club and failing that I would contact some of the C.O's in the areas you want to go. They are probably the best source of information.
I thought you were looking into Any Bull moose and elk areas?
You will find that thin horns are openthe same time as any bull in parts of Region 7B for at least part of the season anyway. Same with Elk.
If only I had more time I too would go further north. I have no interest in goats or sheep at this point but love to hunt moose.
Cheers