In regards to deer i hunt exclusively on the ground. When it comes to a bow/ambush style hunting I rarily use my ground blinds, instead like mentioned setup in an area that provides me natural cover. I also spot n stalk when feasible or the opportunity arises. Like mentioned ground blinds work best if left, unless it is in a situation such as hay field with bales then you can pop him up and hunt right away as the game are used to seeing objects against the horizon or landscape. If your in the woods and setup along a trial with good backing of natural cover they should work ok. I setup in the shadows if possible , so east side in the am and west side in the evening, of course wind direction needs to be observed before setting up. Keep it off their nose and on yours!!