Our internet searches have produced a Master Tow 77T (and 80T) and a Demco Kar Kaddy that look hefty enough to tow the 3800 lb Leaf with two down. Previously, I rented a Uhaul tow dolly, which worked fine. The Unity FX does really well towing, even across the Colorado mountains on I-70 and along SH-160. Any tow dolly ideas?