Read Next: For Comparison’s Sake: Trailer Jacks. ... The Parkit360 Force 10K dolly (left) and Trailer Valet RVR9 remote-control dolly use ­battery-powered motors to move heavy trailers. Courtesy ...

Options include a water-resistant tarp with UV inhibitor to enclose the bed, D-rings, a jack that levels the trailer when off the hitch, a trailer ramp, and a spare-tire kit. Let's Go Aero; 877/ ...