What would prevent me with going with something like this?
http://www.costco.com/Browse/Productgro ... ome&pos=13
I realize it runs off of 110V, but I have an inverter.
They use these type (without arms) on super high end rigs...carefree makes one...their top of the line.
I know its not made specifically for an RV but its made to be out in the weather.