Wieght hitch bars when backing into sloped driveway

I can and have done mine with and without friction sway and WD bars with my steep-ish driveway and street. I'd say do it with all the stuff off if you have any question at all. The WDH and anti-sway are intended to help when traveling down the highway. There is zero benefit to anti-sway while moving in/out of a driveway. WDH? I supposed if your rear bumper were to sag and bottom out it could help. Unless that's a problem I'd leave it off until you're somewhat level on the street out front.