Metal carport RV shelter

If you can't go longer, than maybe you can go wider? Make it as big as you can afford. I had a 32 foot greyhawk, and I went 14 x 40 feet. This gave me some extra room to put a slide out, but also room to add some long rows of 2x10 shelving all the way down for some much needed storage. If you can, bring the metal all the way to the ground where the sun hits it. I added full metal to the ground in back,and eastern side and half way down the other side. Very little sun touched the rig. Plus it's long enough for that 40 foot rig I'm thinking about.