Rock chips

Hey guys, i was wondering what your methods are for fixing rock chips on your front bumpers. I'd rather not only repaint over it and try and do it fairly correctly. Also don't need to do a full powder coat again yet. Let me know if you have any suggestions. (mabe part out?)

Sorry this is the only picture of the front bumper i have on my work computer

 

On mine I just lightly sand some of the rust away and re rattle can it. Unsure what would be best if your bumper is powdercoated, as that has some thickness to it. Pretty much nothing in Washington lasts, especially driving over the passes in the winter/spring until all the sand and highways are clean lol