I have a 10000 gvwr car hauler carrying a 7000 lb blue tractor/implements. Trailer axles scales 8840-9260 lbs depending on which implement is on the tractor.
I some times pull it with the wifes '16 1500 chevy 4wd 5.3 engine 6 speed tranny short bed.
I use a Husky Centerline TS with 1200 lb bars as the tractor has a cab and makes a top heavy load above the trailer deck. No more trailer over steer on sudden lane changes or curvy state/county roads.
I'm 80+ and have no problems installing/removing the hitch minus the bars. Its a friction style hitch and can groan a bit if the L brackets are rusty where the bars slide. After the first couple of turns no more noise.