We just returned from north Florida. It was windy both ways and we felt it quite a bit but nothing scary. We have no sway control with our Reese HP trunion style hitch towing our 32.5' TT. What we did notice as traffic was thick and it made for conversation was, as we were passed by a few and we passed a few TT's, they were all being pushed around as much as we were. We saw one Husky Centerline, one Blue Ox and several Equalizer hitches.
Properly loaded TT "to me" means chosing a TT with the axles set back more toward the rear, a floor plan that doesn't encourage rear loading and the load goes between the trailer wheels and tongue.