"This is what I want. I especially like your stand, though not sure if there's room in the back of our truck"
The stand has parts that I assemble --only takes a few minutes-- so it is easy to store in the trailer here and there. The panels go behind the couch, but could go in the bedroom.
You need a big weight on the bottom or the wind can flip it. I use a chunk of concrete. The wind also twirls it. If the wind is that strong, I add bungee cords to tent pegs to hold it as aimed.
I have another configuration for the same stand so it takes my single 255w panel, but that panel is more awkward to lug in and out of the trailer. Doesn't matter much when we stay in that one spot for a week or three at a time, but would be if RVing down the road, stopping every day in a different place.
I would go for a roof mount in that case since the sunlight would mostly be when on the road. No point setting up solar for night-time. :)
Tilting is to be up higher for morning and evening when the sun is lower. This is backwards from a stand that stays aimed South all day. In that case the panel is kept lower than optimal for high noon so it can catch more sun earlier and later.