Ive made a few trips west for Antelope. So its easier for me to say what i would do as opposed to
someone never having done it. My first trip was with an (outfitter). He played no roll at all in my getting an antelope.
In fact he only played a roll in my (not) getting a very nice whitetail as he thought 400 yds was too far for me to shoot.
The easiest way to get an antelope is to go on a prairie dog hunt in the area you plan to hunt antelope.