In message , shazzbat writes
How about connecting the towing eyes on both vehicles using a rigid metal pole? The eyes are designed to handle the stresses of towing, and so shouldn't baulk at the job. Okay, so you're pushing when they're really designed to be pulled, but the forces should be no different from what would happen if the towing car brakes for both vehicles in a normal towing configuration.
You can buy a proper rigid towing bar from the likes of Halfords (or at least you could, it's been a while since I looked) or possibly make one from an old piece of scaffolding pole.