carringb wrote:
On a dually, WD is not generally needed until you get over about 30' overall length. And even then, it's more of a "nice to have" rather than a "need to have". Unless you you want to pull the TT behind your truck camper on an extension. Then it would be needed.
A weight distributing hitch is needed for all trailers over 5k pounds unless your truck is equipped with a hitch rated for a higher weight carrying than that. If your truck has a class V hitch, it may be rated higher than that.
WD does not assist with sway, OP, if you were worried about sway (which you shouldn't be given that trailer, if loaded correctly and towed level), WD would not help with that. Sway control is separate from WD and can be run with or without WD.
I nearly always use WD.
I never use sway control.