Don't get me wrong, I understand that some people want and need some kind of sway control. I just don't happen to think that little bit of friction is going to change what happens in an all out emergency maneuver. Is the friction enough to keep the trailer straight behind the tow vehicle during normal maneuvers like going around a corner or backing into a campsite? If not, how is it ever going to keep thing straight when the brakes are locked up and the wheel is turned from lock to lock? The answer is, it won't. In the mildest of sway conditions, it may help a little.
