I remember seeing somewhere that Wally claimed the trailers weigh less on the road because the aircraft wing shape created lift and took some of the load off the axel, making for better gas mileage and easy towing. He was some kind of marketing guy.
I do know that if I don't tie my canoe on the canoe trailer that it well "fly" off.
My point was in installing new floors one must consider that they need to take into account both forces. One pushing down and one pulling up. As I have been considering self tapping screws this has caused me the most concern. Try standing in the back of the truck holding a 4x4 sheet of plywood while your spouse picks up speed. The front of an AS is more like 50-64 square feet.
Is this one of those square of the increase deals. Twice as fast gives you four times the force? I think it is. That's alot of force at 60mph. Maybe that's why elevator bolts are needed. The hold the whole thing to the frame and keep it from flying away.