[Boog]

It can get really real in a hurry when the heavier towed end of the deal is much heavier than the tow vehicle. Long wheel base trucks weigh more and help with controlling the towed trailer or vehicle.
It's a sickening feeling to get into a tail wagging situation where the heavier load pulls the truck back and forth. I've seen a suburban with a fairly normal sized camper tail wag and end up both of them all upside down and destroyed.
And i can't emphasize enough how much easier a 5th wheel trailer setup pulls compared to a bumper pulled trailer.