I know it may look gawdy, but you're not hosting gala events in the trailer...you might could just cut a piece of foam pipe insulation and place it along the whole trim edge that sticks out. Probably the size for 1/2 inch pipe would do. Just take the precut slit and open it enough to slide over the trim edge. It would take the sting out if you bumped into it, as well as maybe draw your attention to it where you don't accidentally bump into it.
Just a suggestion, feel free to hate it.