I don't understand the tall fenders either. Yes, I need to drive over them. My truck is too wide to fit between them, at least on the ones I've seen so far. If I can't get this done without removing my front wheels I may just forget the whole idea.
Makes perfect sense about the long tongue!
Lots more research to do. I'm not happy with anything I've seen yet. There has to be a way to shoehorn this damn truck in a trailer without it being 11.5' tall!