Okay, so here is my first post/comment/question...

Recently we purchased a Kuat NV 2.0 for transport of our carbon road bikes, it attaches by a hitch to our truck. We did not have any issues transporting them locally but on a recent trip 9 hour round trip, I noticed pitting and huge dings on the paint of the bikes, scratches and lots of road grime, sand and grease in my cassette, chain rings etc. My question is how can I prevent this from happening again. Is a bike bag a solution or could the flapping of the bag also rub off the paint? Please advise.