I drew rifle bull 2 years ago for 66A/76, 300 or so bull tags were given that year, last year they upped it to near 700 rifle bull tags! and some 1500 cow tags! There are elk in there however with that many tags the numbers have got to be way down, but thats what the IF&G wanted, to reduce numbers, and I'm sure they have. I know that area has been plugged in a couple of the bowhunting magazines and subsequently pressure has been way up the last few years. If you're hunting 66A and are on horses, I've got a pretty good idea where you are headed, be aware that there is a well used 4 wheeler road that cuts right across the top of your drainage, alot of bowhuntes bail off on top from their machines and hunt down while you'll probably be hunting up from the bottom by horse, so if you think you'll be alone, you won't. 66A is not a big unit, then cut off the areas that don't carry elk and it becomes even smaller, you can drive a pickup around the unit in about an hour and a half. 76 is quite bigger but more scattered. Shoot me an email if you want more info.