I place a small trash can upside down over the hitch to keep water out. The safety chains are off the ground, holding the trash can on the hitch. The electrical connector hangs in the trash can with the open end down to keep water out of it.
In a public lot, I used sections of 2x4 for chocks so I wouldn't mind if they 'went missing.' They never did.
Sherm & Terry w/rescues Steve (std Poodle) & Eydie (min Schnauzer)
2015 Jay Flight 27RLS (Camped: 102 nights 2015, 90 nights 2016)
2006 Ford F350 6.0 PSD, Lariat, 4WD, CC, LB, SRW, auto., Camper pkg.