After I take possession of my 5.0 and before heading home. I will be installing the Tracwrap by XPel, which is there temporary film product. I will apply it to the front outer corners outside the upright frame supports and two foot section from bottom, which is typical area you see rock chips.
When I get home my local dealer who is an XPel dealer/installer will apply XPel film for permanent installation. Based on what I've read it seems to be better product than 3M film and has a self healing property to prevent scratches and swirl marks. I'm looking at the Ultimate for tow vehicle and Armor version for 5.0TA.
With my previous Casita I had the Rock Tamer mudflaps that attached to the receiver and would not buy those again as I did not see a difference with or without. The difference I did notice was the weight and bulk they added.
Regardless what you do, nothing is going to totally eliminate or prevent rock chips. Keep in mind it's not just what your tires kick up, but also what passing or oncoming traffic flings at you as well.
Products - XPEL Technologies Corporation