[NJMikeC]

98hawk,

I think there is a lot of information missing. Primarily missing is your definition of sway and what sway is. It wouldn't hurt to elaborate on that a little.

If you don't have the particular trailer balanced then that is the first thing to look at. I'll guess that your pulling between 2000 # to 2500# with the Seadoos. A WD hitch would help. I'm not sure I remember the specs of when Toyota recommends that but it is a little mute. Even the smallest trailer will act "Squirrely" if the hitch weight isn't balanced correctly.

So in regards to towing the Seadoo's first check if the tongue is level. That will help. Then check your specs of when a WD hitch would be required.

Finally as for 6000# you definetely need the WD hitch and you also have a lot more homework to do. At 6000# of trailer weight you are typically at the max of the truck's GCWR as well as GVWR. That brings into play many factors since you are now outside of the operating range for which the truck was designed for. It is my opinion that you must change some things in your truck to move that operating point. In my opinion the weak links are brakes and the rear end. The transmission can be cooled, max torque point in the engine lowered but don't know quick fixes for the other 2.