If you don't have a tow vehicle, the easiest option is to borrow a car from a friend who has a tow hitch installed. That way insurance is a non-issue. The only places where our guests have had any luck renting a tow vehicle are: 1) Uhaul allows towing with their rental trucks (obviously). 2) A family from Australia rented a passenger van from Airport Van Rental (AVR) at the San Francisco airport. We have searched for a solution to offer a tow vehicle to people who don't have a hitch or the tow capacity for our trailers. We've reached out to all of the major car rental companies (Budget, Enterprise, Hertz, etc) and learned that towing would violate their rental agreements. We even reached out to private party rental companies and searched for sturdy vehicles with tow hitches (Getaround.com, RelayRides.com, JustShareIt.com) and found that towing would violate their rental agreements too. We have even explored purchasing a vehicle to offer as a rental to our guests, but were unable to find an insurance company who would cover 'unknown' drivers for liability insurance.