Greetings, I drive KW T600 with Step Deck trailer. Finally got storage boxes hung all down both sides of the trailer which gives me storage and provides sort of a smooth surface for air flow. They hang (literally) from the trailer so they can float if/when I get the trailer hi-centered. They are 14" off the ground at the moment. I was going to lower them slightly and try to add flexible skirting along the bottom, but am reconsidering simply installing belly pan between the boxes down the center of the trailer. There seems to be a "lower is better" mantra, and the reading I have done shows a linear relationship between height of skirting and effect/result. What about belly pan? Is lower still better? What are the opinions/issues I should take into consideration. Both skirting and belly pan have similar challenges if terms of maintenance, weight, etc. I am well aware of the non-intuitive nature of aerodynamics, and one alternative (it won't work on my style of trailer) which I think has merrit is shown here:
SmartTruck. Recent mpg from Baltimore to Orlando w/ tailwind: 10.1 mpg. Best to all