That must have looked tiny on your RV. I know people with a 3kw system (edit: 2940W ignoring losses) on a 28’ RV and they had an AC unit blocking some space. Now they don’t actually see that much power because the roof is a flat surface, but it’s enough he never carried through installing solar on the side panels like the initial plan was.

Of note, flexible panels are easy to install but have terrible power output per square meter.