I have a lot of experience towing trailers (5 of them). I have had the basic WDH with a sway bar, an Equal-i-zer brand hitch and a Reece Dual Cam Strait Line hitch.
I now have a Blue Ox SwayPro. Trailer is 10K gross. I'm not a physicist and I can't begin to figure out or explain how it works. But I can say that it absolutely does work....not a drop of sway. What I also noticed is there is very little if any feeling when a big rig passes us. No "bow wave" affect.
It's easy to set up and easy to use..Down side is that the hitch head is very heavy...much heavier that any of my previous set ups.
