Who has switched from a '16+ max tow F150 to a '16+ HD F150?

I think that the bigger wheels, low profile tires and a panhard rod would help but by how much is a wild guess. Longer wheelbases help too. I don't recall if you said what wheelbase F150's you have. The only other thing that I can think of is a trailer that doesn't get blown around so much by the wind. Do you know anyone with an Airstream trailer that you could drag around for a trial?