It sounds to me like you are overdue for it to happen, you may just need to slow down a bit. If you've spent as much time in the areas that you say you have hiking and glassing, you should have at least had opportunities by now just out of sheer time and luck even if you're not doing everything perfect. You can only spend so much time in mule deer country before you bump into a buck, even in Washington. It can be a steep learning curve compared to some other states but man, you gotta be right on the verge. Keep at it is all I can say, and maybe try to find somebody who kills bucks to tag along with? Or go to Montana