There are a few measures that you can take to prevent your trailer from swaying: - Use the manufacturer’s recommended gear for towing - Ensure the trailer is level - Drive steady - no sudden turns or maneuvers - Drive slowly, especially if it’s windy as this can cause trailer sway - Check tire pressures before setting off - Don’t overload the trailer - Don’t overload the towing vehicle There are also various hitch designs to reduce sway like this CURT 17063 Round Bar Weight Distribution Hitch with Integrated Lubrication and Sway Control. If you are worried about the trailer swaying then I’d highly recommend a sway control hitch.