well, they are outside full-time, fully feathered, about 3 or 4 months old by now? I am losing track of time easily but they are fully feathered. I covered half of the 8 foot span with a tarp and set up cardboard around the corner, but mostly as blind, so they can get a little out of sight from the stupid dog.
They seemed happy this morning if a little hungry. The moisture had made the feed swell and kept it from pouring into the tray. It was not much left, so I just dumped the rest out for them to eat.
I have 2 tarp walls on Camp Cockerel, which keeps about 1/2 the coop fully dry regardless of which way the rain is blowing (one of the open sides is sheltered by my house).