Does anyone have advice for designing a chicken tractor that could be used on unevenly sloped land? I am concerned moving the tractor to different locations on the uneven terrain could leave enough room for predators to sneak in or chickens to sneak out under the straight bottom edge of the chicken tractor due to the inconsistent spacing between the ground and the bottom of the tractor. Is there a recommended distance that I can have between the ground and the bottom of the tractor to ensure no predators can get in? Is there a flexible material that I could put around the bottom to discourage predators from getting in or chickens from getting out. I am new to this site and haven't started raising chickens yet. I want to understand best practices in coop / run design before I start raising my chickens. I'd prefer to use a tractor, but understand that I may not be able to find a solution that will work with my terrain and I may just have to keep the chickens in one spot on the land that is level.