From what i'v seen they hold up good.About 15-20 miles from my house there's a truck sitting ,I think it was a 47,it was fixed up with updated suspension.The rearend came loose and it rolled I think 4 times,everyone come out ok.Wish I could say the same for the truck,but at least no one was hurt badly.If I think of it i'll get a pic.
I have to agree about getting rearended,the good thing is most people are used to seeing tractors going down the road here so that should help.Va beach that a whole differant world.