A wind stopper jacket under your camouflage jacket and a light pair of long underwear under your hunting pants. A good pair of light boots and leather gloves to protect your hands during the stalk. But throw in the heavy jacket and long johns just in case. When the time comes to shoot the hunter should have a gun that he can shoot well. An antelope is a small target and accuracy is a must.
Most antelope appear further away than they are.
A range finder is a nice extra when the distance to a trophy of a lifetime is under question. A bipod is also helpful, especially on windy days. A hunter may well see more antelope hunting south of the border but he would be hard pressed to find better quality heads than what Alberta has to offer. Alberta may be on the fringe of antelope range but it is right on top of the trophy range.