I have sat in my ground blind set ups over the years, especially for whitetails. You two main options are to buy one of the many available out there. They are nice because you can stay generally warmer and dryer as well as your movement is masked better. The main downside I have found is that they can be tougher to brush in and conceal and finding a decent spot for them with a view of the area you want to watch can be tricky. Your other option is to build a blind by cutting some surrounding vegetation and use that to gain some concealment.