Can a roost be hung like a swing? I want to add a roost to me basic box tractor but there are no wood sides in the middle to attach a roost to - and I priced l-shaped basic shelf supports and the cheapest of those were still $5 each in the size I needed. Could I just loop two loops of rope (or bungee cords) around a top support and lay a piece of wood in the loops? Then it could be adjustable too - low to the ground now that the chicks are only 3 weeks, raising it up when they get bigger, etc. What do you think?