I had two on a 26' trailer for years. Tighten it down tight and back off until the handle is parallel to the bar. If you tighten it too much during a sharp turn you will either bend the bar or break the little ball off or both. For the first few times that you use a new friction grip sway control pull out the bar after use and clean off the friction residue with course steel wool. The residue can cause it to stick and damage the bar. Always take it off before you make a sharp turn backing up. Going forward it is highly unlikely that you will ever make a sharp enough turn to damage it.