Most manufacturers recommend using two
friction sway controls on trailers larger than 25 feet. The sway bar simply fastens on between the hitch head and the trailer A frame via two small balls and a clip. This stiffens up the connection between the two vehicles and helps to keep them in line. I would strongly advise getting them as, even though you say it tows well, there can be many situations develop that would require one and if you don't have it, it is too late to get one. They are all about the same so don't worry about the brand.
Here is what I am talking about.
Barney
