All I can say is that I hate rock chips too. That is why I did something about it. I installed a clear bra with the 3M product. Holy smokes has that saved me. I abuse my truck and I dont have to get pissed when I get a chip anymore.
The cost was more than a black bra but not bad. The place I got it from sold it to me for $200.00. That is a lot cheaper than a paint job, right? If you guys want to check it out it is
www.rockblocker.com. I hope this helps you guys out.