I think the "hail Mary" tactic is not your best bet.
They make hitches for damn near anything.
Buy one. Bolt it on. It's not that hard and this is a "MUST DO" situation.
Who the hell can build a decent mutant vehicle and can't tighten six bolts?
Go to U-Haul, they have hitches. Go to a welding shop, they can make one. All you need is a little square-tube and some plate. Go to a trailer supply place. GET a goddamm hitch and get going!!!
Sorry to sound "Drill Seargeant" but failure is not an option!
This is a simple problem that you can fix.
Assuming you have a truck or van or SUV that can tow it but lacks a hitch - they simply bolt to the frame, frequently through existing holes. If you have to drill the holes then get your ass down there and drill!
Start with a really small drill bit - 1/8" or so. Then step to a slightly larger one and keep stepping until the bolts fit through.
You can buy a drill and a set of bits at Home Depot.
If you can build a mutant vehicle you can do this.
"Whaoomph! Whaomph! Burbbleburbblepattpattpattpatt... WHAAAAAaaoooaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa........!!!"
Top fuel dragster, by Elliot Naess