My old Lance had an awning rail on the passenger side of the camper and a slide on "bag" awning, like they use on tent trailers. All self contained in a bag, including poles and ropes for staking it down; which was the inconvenient part, especially if you were on pavement. It worked just fine but it reminded me why, except for over the door, I prefer a portable canopy. As the sun moves throughout the day the shade disappears and by being able to move the shade structure you get better use out of it, if that makes sense. I would like a rear door power awning though! :)
Dak