I don't have any experience with loops but I do have one concern. Assuming your motor home is at least 12 foot in height or maybe more, you might have to address the height of your loop if operating mobile. Anything over 13.5 foot might be a problem with bridges. Some cities have clearances as low as 12 foot. Maxiumum height of any vehicle operating on interstate highways is 13.5 ft without getting a permit.

Also having a string of wire running a few inches off the roof of the RV might seriously affect SWR and such.