Check into a Hensley Hitch. Pricey, but no sway, especially when you travel as many miles as we do. It also can be traded back in when you quit using it. Lot of Suburbans pulling Airstreams use it. I have no sway with 40 mph crosswinds. They do sell reconditioned ones with full factory warranty.
We are driving a Dodge Durango and pulling a Evergreen G269FK. We also have two Cairn Terriers. 2 Champion Generators. This year, planning on 6 months in our Evergreen visiting, California, Michigan, and Ohio. We live in Florida. Grandkids, and dogs are why we camp. Also have a Hensley Hitch which that eliminates all sway. Pricey, but worth it.