I've never been on a guided elk or guided horseback hunt, but the few guided hunts I have gone on has seen me tip my main guide about 10% if he is good and treats me well.
I hate to sound cheap, but unless the cook and/or skinners, game keepers, etc. (I guess wranglers would fall into this category) really impress me, I usually don't tip them.

I have before, but they really have to stand out from their peers. I tipped the cook during my Spain hunt in January this year 100 Euro because he was absolutely awesome, and deserved it.

One thing I have noticed, is that while everyone loves $, the guides would rather have a mediocre tip and a hunter that is easy to work with, hunts hard and doesn't complain about everything, than deal with a $hitty hunter and get a big tip at the end. I think they appreciate everyday hunters who save for years for a hunt, and give a mediocre tip than ultra rich guys who are a pain in the ass to deal with. At least I did back in my guiding days.