RV without a WD hitch

Ok, just adding to this. Was going home yeaterday feom work and saw a f 250 towing a small garderner type trailer on the hyway. It was loaded badly and the tow hitch wasnt set up properly. It was a light load for the truck. Sure enough swaying out of control at about 55 mph. Hes lucky he had a 250 or he would have flipped. Thats how bad it was. He slowed down to 45 , i slowed down some in fron of him to check his speed a bit. But i lost him on a curve, i hope he pulled over. So , your set up and sway depends on a lot, loading, hitch set up properly, speed, weather, etc. Whats good for some is not good for others. I rather play it safe and use the WDH with sway control. Even if i really dont need it. It just takes one time to crash. My 2 cents , worth even less then that.