Towed my pup all last year with no sway control and it did ok until you hit 65mph and then it immediately started swaying. Bought a Curt friction sway bar and got it installed this weekend. Night and day difference. Tows perfectly. I got it up to 75mph just to see and it never even tried to sway. Will be keeping it below 65mph in the future, just wanted to see how it did if the speed creeps up a little. So if you have thought about a sway bar, I highly recommend getting one.