I do quite a bit of boon docking thus solar was well worth my while. With a means to add fresh water and drain holding tanks, I could spend the winter with no electrical hook up. I also have an extend a stay for a portable propane cylinder. I went with roof mounted. I documented my install here.
http://www.thorforums.com/forums/f27...31e-14555.html My model is a 31Y. At the time of posting this I must have had a senior moment.