I'm afraid to be in one when a car load of the worst kind of red necks come around shooting any everything in sight.
There's three ground blinds I hunt out of when not up in a tree. Two are in some heavy cover and you just couldn't see them from a distance over 40yds. Today, all these blinds have 2'x3' pieces of hunter orange canvass on all four side and can be seen from afar.
The deer don't mind at all.