leaving wdh on tow vehicle

I am new to RVing. I have a Keystone Bullet 2070 with a wdh and sway bar system. Not sure of all the technical terms, but I think I got that right. :-) My question is, as a woman taking that wdh hitch on and off my tow vehicle, a 2016 Nissan Frontier, is a little more than I can handle alone. Is it okay to leave that on my truck, using a hitch lock I am thinking, while I am traveling? I would have help removing it when I return home. The longest it would be on my truck would be a couple weeks or so. Also, if it is okay to leave it on any tips or suggestions about the bars/chains and keeping them in place (do they swing around while moving if not hitched?) and preventing them from dragging? Thank you! Kathy V.