Might be out of your way but there is a area up in the north Western portion of zone 4 that had some really fine lopes. In talking to the Forest Service chopper pilots, they kept seeing a couple of very large lope bucks in the Silva Flat- dry lake bed area South of the Hayden Hill Rd on the West side of 139. That was years ago but i'll wager that area doesn't hardly get hunted, if at all.
Might be worth a 1/2 day hunt if you're not finding what you're looking for in the more popular areas!!
BTW, there is a refuge in that area but it is open to Antelope hunting during the season.
Joey