If you set up a equalizer hitch right you will be level. I remember seeing this demonstration using a Oldsmobile Tornado at a camping show in Philadelphia in the late 60s. The car hooked to a trailer drove around the lot as a demonstration.
I hook up my trailer then lift the back of the truck with the trailer tongue jack. Then I hook up the equalizer bats and chains. Then lower the jack if it is not level I repeat and shorten the chain length till my rig is level. After you get it right remember how many links you are using for your next hook up it should be the same each time.
2014 Columbus 320RS
2011, Ford, F250 srw, 6.7
Life member GoodSam, KOA, F.R.O.G