Sonic Hatchback dirt issues

[airheadbit]

I have to drive on dirt roads and with the 2017 Sonic Hatchback I end up with piles of dirt all over the rear hatch. Does anyone know of a air deflector that keeps the hatch clean?

 

[thebaron]

I saw a video about polishing the glass to made it less like to built up dirt which I need to try.