Add a Fairing for MPG Boost?

[idahoron]

When I used to tow my 19 foot camp trailer I could get 15 to 16. With the FWC I am getting the same 15 to 16 mpg. If I looked at it like cost per mile and square foot the trailer would win. But we got these campers for a different reason than that don't we? I didn't use my camp trailer for 3 years. I use my camper to some extent every weekend.