I have hunted them once using an outfitter. Table MT Outfitters (Scott and Angie Denny) who advertise on this site.
They run thier hunt out of WY, south of Gilbert near Wright.
First class operation and great people.
I'd suggest an outfitter the first time you go unless you live in goat country and can do your own scouting and gain land acess.
I live about 1000 miles from serious antelope hunting and trying to scout, find a place to hunt would cost more than an outfitter.
I hunted out of a blind over a water hole. I saw plenty of bucks, does and fawns. They are interesting to watch and a lot of fun to hunt.
Because of the open country hunters will see a lot of animals that you will not get shots at from your blind. That's one of the things that keeps your interest up. The hope they'll come your way.
It is not a slam dunk. Like all hunts there is always that chance you will not get a shot at the size animal at the range you feel comfortable to shoot.

Before you go I'd suggest going to a Cabelas store and study the mounts to give you an idea of horn and cutter size compared to the length of the goats ear.
I found from my limited experience that this was the best way to learn about the size animal I wanted and how to judge them.
Their ear is about 6 inch long. You want a horn (made up of hair or finger nail type growth) that is at least 12 inches or better. You want a nice heart shape and the area near the cutter(prong) to have mass. Four inches around or better.

Practice shooting out to 50 yards and prctice shooting from your knees.

If you go, good luck and enjoy yourself.