Have been reading about people truck drivers, rvs, etc putting these "v" shaped air tags on trucks and rvs- claim that it makes your rv a lot easier to drive as it dissipates air that blows you around. We are talking wind from trucks and any other kind of head wind or side winds. Also tends to be a very slight ( 2%- 5%) better fuel mileage. A kit runs about $200 and these are attached to rear edges of coach.
Has anyone tried these? If they work as advertised might be a good thing!