Since this thread has slowed down a bit, I'd like to make a tangential comment on the previous post by Angela. There is a natural animosity between airports/FBOs and ULs that no one has brought up yet. NO ONE MAKES ANY MONEY OFF OF ULs! A "normal" airplane is going to pay (depending on lots of variables) some combination of landing fees, hanger fees, tie down fees, profit on fuel sales, etc. to the airport/FBO. Contrast that to a ULer, who stops on the way to the airport to fuel up his jerry cans, arrives at the airport, unloads the UL, gets it through/over the fence, fuels it up, spends a couple of hours flying around, and then reverses the process. He uses all of the facilities a "normal " airplane would (including the restrooms and eating the FBOs cookies) and no one makes any money off of the ULer. If you were an airport/FBO manager, why would you do anything to encourage ULs?