Harry, if you can't find one from a private individual, I've rented them from U-Haul. They're about +/-$50 for a 24 hour rental. Only problem is that if you tell them you're towing a Fiero, they won't rent to you. I've always told them I was towing an 88 Cavalier or Corsica or a 93 Grand Am.
If anyone down here has one, maybe I could pick it up, get your car and bring it to you. It would save you making a trip down and back for the car and another round trip to return the dolly.