If no one is bothering him that's good. He needs to be able to rest. I don't know that I'd drape a tarp, that might bother him to have it blowing or rain hitting it.
Didn't know what else to do. She didn't think it was a good idea either and agreed to the stall where not next to a horse if it starts to rain. My husband went back to check on him and just called and asked me if he ate caz he seemed hungry. They were waiting when I left. He may be getting ran off. Eddie going to give him half a scoop. I just wonder if his throat sore. He eats but he's so slow. It took him about 20 minutes to just eat a couple cups of sweet feed.