Coupler Connect®plus Protect also includes aseparate hold down device that prevents the coupler from accidentally popping off the tow ball during travel. One mounting bracket, two complimentary accessories. First use the guide plate accessory to align the coupler directly over the tow ball for easy hookup. Then, remove the guide plate and insert the protective hold down accessory to help prevent the coupler from accidentally popping off the tow bar during travel. As an added benefit the plate can also be used to secure the trailer to the tow vehicle when a padlock is used.