A lot of my lightweight technical big game layers cross over really well for late season roosters. Zip off merino wool base layers. Goretex windstopper vest or jacket (sitka). I hate bulky clothing and really try to avoid heavy boots, bibs, parkas. And there's nothing worse than working up a sweat walking out to the end of a shelterbelt only to stand there in the wind for 30 minutes as a blocker if you don't have quality clothing on to manage perspiration and wind.