TNT (top and tilt) = replace the top link turnbuckl with a hydrualic cylinder, and replacing one or both of the side link turnbuckles with a hydrualic cylinder.
backup tractor, adjust the TNT. to help align 3pt linkages to implement.
telescopic lower lift arms, can make things easier, and not backing up perfectly. and extending out lift arms, latching onto implement, then backing up tractor to get lower links to lock, then attach top link.
you get in and out of tractor a couple times. but... you do not need to modify any implements.
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when you go to the upside down U shape quick attach setups. then more than likely 1 if not all your implements will need to be cut and re-welded in order to attach to the quick hitch.
reason? most implement rely on 3pt hitch lower lift arms to move side to side some. for connection. but a quick hitch you remove that side to side action which results in modify implements.
most quick hitches most likely still require you to get off tractor at least once, to either lock or check locks. and/or undo locks when un-hooking.
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on the other side of things. once you get into CAT 2 equipment. many times most of the equipment so large. that the equipment tends to have hydraulic wheels that lower/raise for roading the implement, and/or to adjust the height of the implement. as a result many implements tend to end up being more of a "trailer" style implement vs direct connection to 3pt hitch itself.
there are some different hitch styles, much like bumper pull, goose neck, pintell, 5th wheel for a truck. i do not remember the names for some of the quick hitch setups for cat 2 and above for trailer style implements.
regardless you generally need to get out of tractor and hook up all the hydrualic lines. and deal with some sort of jack normally.