I too recommend pylons or markers on the drivers side to indicate where you need to be. Placing them takes practice too.
My DH is easily distracted by pert near everything. His only job is to make noise if I am going to smash something. Walkie Talkies, a whistle, or standing in ear shot helps. Getting out of the TV as often as needed has saved many a close call.
I have no shame in asking other campers for help guiding me in. If I see a fellow RVer having problems the first offer is to assist (teaching) if they want me to get behind the wheel that's plan B.