I took a look at the other post about various options. One that the OP didn't consider was dumping the Mazda and going for a small motorcycle/scooter. Would keep the overall length down if you could use a hitch carrier; would provide additional storage space if you used a small trailer to haul it.
One thing about older small Cs and towing - thoroughly check out the hitch and how it was installed. If it was added aftermarket, it's very possible that it was not properly connected to the frame but simply attached to the plywood.
