Doc, working for an outfitting service, I have see a lot of folks that swear by them. But I have heard tales from many of them being busted while sitting 20 ft up in a stand. While other folks sit the same stand without a suit and have deer walk right under them. It takes a lot of work to not ruin one and to make it work right. My personal opinion is that the wind is going to play in whether you are wearing one or not and I am sure that having one on is going to give you that extra edge if it is used correctly. My gramps, and his gramps, etc., etc. never used them and they got their deer. It is all a matter of choice.