Backing with sway hitches
There are lots of weight distributing hitches. Some have the sway control built in to the shank and some have a sway control that mounts out to the side of the shank and the trailer frame. It has been my experience that you need to keep you weight distributing arms in place as long as you are moving your trailer, whether you are pulling forward or backing up. If your WDH has a separate sway control, yes, you need to release it when you are making sharp turns or when backing. If your sway control is an integral part of your weight distributing hitch you need to back up with it still hooked up. Some hitches like some Equilizer Brand hitches may require frequent greasing of the swivel points in the hitch head. If your hitch needs greasing you will probably feel your steering wheel pulling one way or the other when traveling down the road. Hope this helps.
Steve & Paula Smith
Warner Robins, GA
New 2016 Vengeance 320A
Previously owned: 2014 Vengeance 25V, 2011 KZ 184,
2011 DIY 7 x 14 Enclosed Trailer,
Motorcycle pull behind cargo trailer with tent