I find myself sitting in front of the bush and using the bush behind me to break up my outline and no movement the keep me invisible. I've sat in front of power poles, coral corners, sat on rocks as long as there are rocks behind me so I'm not sky lined. Standing, yucca and joshua trees break up your outline, any taller brush or tree trunk will break up your outline, stillness will hide you. There is nothing like a coyote coming in close and get that "Oh Crap" look when he realizes your a human.
I now sit on a 16" tall three leg stool for all my stands that don't have a natural seat, rock, log, or dirt bank. I'm getting a little stiff and getting up off the ground can be a struggle sometimes.