DO NOT use hinges from a home improvement store they can't hold the load.
Make the hinges. a u-shaped piece of steel (1/4" thick) with at least 1/2" grade 8 bolts (12,000 lb. clamp load). A-frame tounge right, remove it (make sure not to damage it), align the "hangers" with the tounge ( at the end furthest from the hitch)
, weld them on the fame of the trailer drill holes through the ends of the toung and hangers. Run a bar across the a frame at the front edge of the deck and put a hanger across the deck of the trailer over the bar, dril holes install hitch pin. Then you have a tilting trailer.
tipping is gonna depend on the trailer (I have one that as soon as you pull the pin on the unloaded trailer it tips on its own).