I use tarps on the top of the run and plan on putting clear plastic sheeting on the sides this winter as it will keep out the cold and let the sun shine through for warmth.
My Doms seem to take to the confinement pretty well their run is 8 x 16. I lock them in their 4 x 8 coop when they go to roost in the evening and let them out each morning.
I sit in the run with them at different times of the day and they play around me. I can't let them free range because of...