I hunted the Castles a fair bit in college, and the Crazies probably just once or twice. Never saw an elk in either place, not even in the back of someone's truck, but got into some decent deer hunting every once in awhile, just never put it all together. Can't say I really knew what I was doing back then though.
I live near the Crazies. I have never hunted them before. Not sure if they changed the tags to draw only or not. Plenty of elk, and no grizzley bears. More pressure from rifle hunters cause the elk to move to private lands. Still plenty of public land to hunt. Watch out for the high winds!
When it comes to scent, there are basically two types; those that attract and those that mask. I've tried both on many occasions. There are lots and lots of "doe in heat" scents, designed to attract a big buck into range. I've also used a "cow in heat" scent while elk hunting.
Another scent would almost be better named as a "coverup smell". The main goal is to cover up human odor or mask it. Though I don't believe you can ever totally eliminate all human...