The two biggest WA bucks I've seen (180 class) were (1) in open rimrock above the treeline, and (2) on top of a 5,000 foot ridge with a grassy hillside with scattered trees on the south side, and heavy dense timber on the north side. Didn't get shots at either one. I prefer to glass and stalk, so I usually hunt the southern slopes that are more open. See plenty of smaller legal bucks out there, often in the wide open. But the bigger bucks usually seem to be right at the ridgeline so they can reach the dense north side in short order. That being said, my biggest WA muley (155) was shot at the base of a mountain full of timber. But instead of being near the trees, he was bedded out in a wide open pasture with his girlfriend, maybe thinking no one would look there...? It was opening day, so maybe he just hadn't felt any pressure yet...?