After going a round or 2 with county officials, we finally got our Escape Port up and the 19 under it. Because of zoning restrictions, 12 X 21 with 10 foot side walls was as large as I could go. I would have preferred 25 or 26 foot length, but I think this will do nicely. Once it was up and passed inspection, we put 12" X 12" concrete paver stones in for a floor. It's not perfect but is good enough for trailer parking. We've stayed in a lot rougher places.
We bought it from Carolina Car Ports.
Our yard is pretty small so I had to pull the trailer into the back yard with my van then manuver it under the car port with a Parkit 360 Battery powered dolly. Yes, it works fine. No, it's not as easy as the videos make it look.