I don't have solar, I don't plan in the near future on getting it -- no need for me, currently.
However, I would look at these guys:
http://shop.rvsolarnow.com/RV-solar-Kits_c8.htm
Why? They're solar-in-a-suitcase systems, which look like they'd need minimal modification to wire into a battery (with a disconnect). Portable = aim it at what little sunlight you can find, without having to worry about parking the TM in a particular location/orientation. Don't bring them when you don't need them, etc. Not too pricey, either, best I can tell. Expandable, if you find that your initial estimate of need isn't enough, you can add on another portable panel.
It's something I would seriously consider, just passing along another option!
(again, I don't have solar and have had no dealing with this company, just thought the product showed promise for our kind of set-up)