If this drought continues, you should hunt in a blind over a good waterhole with a good decoy. Spend a few days scouting those units and you'll be able to see what waterholes they are using, set up a blind, natural or something like a double bull before season so they can get use to it and nail a monster. Stalking a Pronghorn with a bow in open country would be a huge challenge, especially during rut when the buck has all of his girlfriends with him.
Goatalopes can see 320 degrees out of 360, so the only thing they can't see is directly behind their head. Add to that 8X power eyes and you have a very difficult stalk a head of you.
Here is a very handy and effective device I use to dispense corn with - but it could also be used to dispense any other seed or deer feed.
I had an old feeder that had a failed motor... I made a set of brackets to attach the feeder to the rear of the 4 wheeler - the lower one encircles the feeder and has a forward section with holes drilled in the outer ends of the bracket... these holes align with two 5/16" bolts that drilled into the rack of the 4 wheeler.
The upper bracket is an "L" shaped...