When breeding is over, male birds return to their bachelor groups while hens raise their broods through summer and fall. They lose the hostility towards each other as testosterone levels moderate and they become very social again toward their kind. Good time to use coarse gobbler yelps and clucks. If birds arent gobbling anymore, than that answers your question about using a gobble call. Stick to gobbler yelps and scout to find where they got to. Often they head for higher elevations but they will never be too far from a water source, even a small one. Warmer temps mean find shade, cooler temps and water.