and... I am happy to report that on my first "outing" with my panels, they performed very well!
I have decided not to roof mount mine because They are so
light to move and easy to deal with that I personally would rather do so than limit my choice of space based on how the sun hits my roof. The panels stow on the bed easily for travel and I am not worried about them sliding off (My bed is up front and it is so stable up there I swear I could leave a glass of water on it and it wouldn't spill)
I was in a lovely forest service campground this week, with what I felt was the best site in the place, right on a large creek, small river, but the spur itself was completely shaded throughout the day. If the panels were roof mounted, I would have most likely chosen another less lovely site just to get the exposure. Instead, my trailer was cool, and my charging was hot!
I rigged a temporary harness for this trip and was able to position the panels where the sun was. These two and my rock guard 15 watter and separate controller made my time worry free as far as the
battery was concerned. So much so, that on my 3rd day, I moved to another campground and only deployed the 15 watter. I was fully charged on arrival and only needed a top off for the evening.