Per the sway bar manufacturer of multiple companies if you have a camper heavier than 6000lbs or longer than 26' they recommend a second one. Granted every time I've taken out my camper on the road its been 20mph or greater. figure with having a 36' camper a second one to help out is cheap $49 insurance. Yes one more thing to hook up and what not but yes sway is an issue but hoping with the change in my WDH and Tires and the second sway will just make it that much better to tow.
But every time right now if I go above 60mph it does get a little crazy but also my front end was light. Going on a short camping trip this weekend only 25 miles away. So see how she handles this next trip and will report the results on everything I changed from last time out.