[John McMahon]

For Cobras and most mid size cars, a 20 ft trailer is plenty big. They come in all shapes and configurations.

a new 20 ft Haulmark utility trailer (race trailers are more) is about 5K near Pocono Raceway at Chestnut Hills trailers. Drill down the price from there for used.

Resale is usually not an issue, 20 footers are always selling. Unless you're going to a lot of races, hauling alot of tire and parts, no need to go bigger than a 20 footer.

Make sure you get a load leveling hitch and bars, it will greatly improve your towing experience.

Also, anything bigger than 20 ft, you must consider the towing capabilites of you tow rig. I don't care what they say about towing capacities, its never enough. I finally went from a Ford Expedition w/ 5.4 to an F250 Turbo Diesel, which will pull anything. Some gas powered SUVs are better than others...but ask those that own them before changing vehicles.