Thank you for the thumb's up. I had a hard time finding plans for a mobile coop that was not based on a chicken tractor design. So I just built a gambrel style shed design on the boat trailer platform. Hope it might give someone else an idea if they are looking to build a mobile coop on an old boat trailer.
These are good, simple ways to cool chickens! Although some of these may not work too well when it gets REALLY hot, they are good ideas to keep them cool, or to at least help keep them cool!
Another thing you can do is to put electrolytes in their water so they don't get dehydrated and it helps them stay more hydrated.
Overall, a very good and helpful article!