Dent in Aluminum
I have felt this pain. I sympathize with your urge to do something about it. I couldn't ignore the damage to my otherwise pristine trailer either, so I had this same panel and the one below it replaced at the factory last year. My dent was more major than yours. You would be surprised at how much of your trailer they have to take apart. For example the trim rail at the bottom edge of your panel has to be removed clear up to your entrance door. All of the nicely bucked rivets in the replaced panel that do not leak now, especially those around the window frame will be replaced with the pop style which they,"Don't think will leak, (should) be as good as bucked." In the end they admit most people will say bucked are better. Aluminum can have a body filler added if done by someone at a body shop who knows how to treat the aluminum so it sticks without trouble. This small dent could be shaped to the original curvature and you can cover it with an American flag or whatever vinyl decal you like. You can even have something tailor made. You will still have all your bucked rivets in a panel that no one can ever tell was
damaged. The cost may be so minimal that you don't even turn it in on insurance. Then when you get caught in the big hail storm which we all know is coming eventually you can have the panel replaced if you want to.