How do you tell if the Blue Ox is latched? I have been using a Roadmaster for years but it is only a 6000 lb. rating. Bought a Blue Ox with a 7500 lb. rating and used it for the first time last trip. The Roadmaster latches drop down when latched so a visual tells me all is well. The Blue Ox latch is in the same position whether latched or unlatched. When leaving an...