Thanks for the interesting thread regarding the "tail wagging the dog".  Hank2 was using a Ford Ranger pickup with a standard hitch, towing a 2720SL which flipped him.  

I also use a standard hitch and have felt on occasion the kind of sway oscillation that could lead to trouble.  It's the sway where one excites it further by loosely correcting back and forth with the steering wheel.  Because of this I removed the spare tire off the rear and one of the two forward batteries.  This condition is now is improved.  I cautioned in a recent thread about adding weight at the ends of the trailer.

Sway is complex interaction between the two platforms, including suspensions and various moments of inertia -- and is not a black and white comparison of specifications such as wheelbase, weights, and towing ratings.  However, a lightweight tow vehicle such as a Ford Ranger using a standard hitch can make a non-ideal tow combination into real trouble.

Lighter vehicles especially need an equalizing hitch.