I hunt it religously every year. a couple years ago I had a 3 axle toy hauler behind a duramax filled with a yamaha rhino and 4 wheelers. as you know it is foot traffic only. I called the law on him and they warned and sighted him (2 different times) I eventually left as the lazy slobs just kept riding in. we saw no deer that trip. we typically see at least one very good buck, but if they get any pressure it is over. the KC is a killer area, but any public land can get no pressure one year and pounded the next. I suggest scouting a couple drainages so you have at least 3 you are familiar with as that is NO place to get screwd up.
If you want to se some winner bucks find the peaks that have no trail that is "easy" to the top. there are always good buck up there.