I never use a WDH... I have a Bulletproof Hitch and AirLift bags with the onboard wireless compressor. If my truck starts to wriggle because of a crosswind coming from out West in the Plains of America... I simply make sure the ride is Level so I have the most control. A trailer that sways a lot is not properly loaded, bad axle placement design or wrong hitch height. Getting a multi-adjustment hitch for your truck is crucial to having the most control of the payload. I typically tow boats exceeding 30+ feet in length... you've never seen a WDH on a boat trailer have you? You mostly see them on lightweight, overloaded travel/utility trailers.
Fix the Cause, not the Symptoms. If it sways, what are the tire ratings on the trailer? Buy better tires like the Carlisle RadialHD tires. Go UP to a higher quality trailer tire and magically see your MPGs and stability improve. If it still sways... add the airbags to your truck. The installation is easy and can be done in less than 2 hours by a novice. Get a Bulletproof Hitch... period, end of story, they are the best!
I can pull the trailer shown here up to speeds exceeding 120mph with no sway. I did it as a demonstration for Aerovault Trailers during the Silver State Classic event in Nevada years ago. No Sway... no movement at all and it had a 2018 Porsche GT3RS inside at the time. Videos are on the Aerovault website.