Northwestern Colorado holds good numbers of pronghorns. There's a good mix of public and private land - large blocks of public and large blocks of private. I see more antelope on the private land than on the public land. Most private land comes with trespass fees. I've always hunted with a gun. I've got nothing but respect for anyone who pursues and bags a buck with an arrow. Chuck Adams, famous archer and author, hunts NW Colo every season, I believe. He puts a buck in the SCI book every year. I believe he hunts on private land through an outfitter. Public land archery must be much more difficult - you can't count on a blind going undisturbed. I've heard that decoys work for the first day or two, but then the antelope wise up. If there's any way you can afford an outfitter, or a trespass fee on a ranch where you can set up a blind, I'd say you'd be way ahead of those archers on public land. Good luck.