Pardon me, maybe this should be a new thread?

With soaring fuel costs and lots of miles slated for this season, I like the lower idea (8" wheels), from the wind resistance standpoint. I'm about to take the old school, overblown cooler style box OFF my 16 trailer (sail tube only). Nothing in it can't be kept in the vehicle. Thinking of doing something to the front of the box on the 20 trailer (along the lines of Thull) to cut down wind resistance. Or is this useless? Engineers? I dunno, maybe I can tape some smoke bombs to my bumper. Will a significant amount of air go under a tow vehicle at 70 mph?