The story of that big cat is on gamefishin.com in the hunting section by the mod and shooter going by jjhack.

A good spot to track em down in the snow rather than call is up above Liberty (on the Blewet Pass sp?) road above Ellenburg. I used to elk hunt there and there are tons of kitty's. The ridge above Elk Heights is another good spot. We had a cat trail us up there one time in the dark. When we found his tracks on top of ours the pucker factor kicked into high gear!
Good luck.
If you have a snowmobile I also know a guy who will take you hound hunting in ID. Nice dude and does it just for the fun not for $.
I've kind of befriended him and he's offered to take me but I bet I could set it up for you.