I'm sure this has been asked lots of times, but I've got lots of newb questions. I'd like to get a rear rack for my '95 hardtail Giant MTB but I'm also considering at some point in the future getting a road bike instead for easier commutes to the grocery store, etc and to use my mountain bike for trail riding without having the rack on it. Currently I use my kids trailer if I need to haul stuff, which does work but can be a bit of a parachute in the wind.
My question is, will standard racks fit on my current bike with the chariot trailer hitch cup attachment in place? And can I move that same rack over to a road bike when I eventually get one? Any good pointers for rack recommendations would also be appreciated. If no rack would go on both bikes that would change my priorities. I'd still need one that could fit with the chariot hitch cup if possible.