Bought this trailer this past weekend, primarily to haul our motorcycles, but I am sure that it will get used for a lot of other stuff. Yeah, I know that I don't need a 24 foot trailer for a couple of motorcycles, but it should be handy non the less. It weighs about 3,700 pounds empty, and it was about 150 miles away, so I had an opportunity to compare tow/haul mode to normal mode while pulling it. I set the cruise at 65mph, and had a few small hills to go over. As far as I can tell, the only difference between the two modes is that it runs a gear lower when in tow/haul.
In normal mode, on flat ground, it was staying in 7th, and 6th in tow/haul.