The rack did not have rubber protectors for the gutters but i am sure something could be easily added. The rack is only mounted to the rear section of the top allowing the freedom panels to be removed. There is a version that has another cross bar that mounts to the freedom panels.
Took about 45 minutes to install. The worst part was disconnect the driver side marker light harness as I had a hard time fitting my hands in the area.
My camper weighs around 3600 lbs, I get around 15 mpg when going to the beach. This past weekend I average around 12-13 mpg’s going towards the NC mountains.