If you have windows all around - put dark curtains on the back and side windows, wear dark clothes - we use slider windows -and on the inside have pegs that you can adjust your rest across the window since we are all different and like different chairs, If you are on a field - put some corn or tree planting in front or up to it - plan an escape if your field is full of deer at dark. This is maybe the hardest thing to get right -but to your question -sliders are best in my opinion.