car trailer advice

I used a U-Haul car hauler to tow the Scamp from Texas to Ohio back in May, and it pulled better than anything I've ever towed. 75 mph, dead straight down the road, no issues at all. Never wiggled even once. I'd love to find one they are selling and add a few touches to it (winch, for sure), but the guy said they basically never come up for sale. Too bad.