I occasionally tow our tail wheel planes with a cheap old Yardman garden tractor w/ hydrostat drive. I use a ratchet strap, tie it on the tail rod and hook it to the tractor. Pull only, no backing up.
It can be a little swervey (is that a word?) so I have a wing walker or we stop before I get close enough to bump anything.
My son uses a yard tractor and a Aero specialties 34R universal tow bar. So far, I like that best (for a store bought thing)