A regular, non-aluminum enclosed trailer is probably a little too much for a Dakota. Even with a 1/2 ton Ram you'll need to use an equalizer hitch. An aluminum trailer like the Trailex and Featherlite will save you some weight, but, of course, they cost considerably more. When towing, weight is not the only issue -- enclosed trailers push a lot of wind and can be a lot of fun when a semi passes. One of the cheapest trailers you can buy is a Haulmark Thrifty Hauler -- a 24-ft model should be around $7000 new. Of course, that's a stripped down trailer, but it is transportation. If you want something fancier with real nice inside siding and floor, and some other options, you're approaching $15000 and up. I've seen the Trailex at Viper Days, and they are real nice. The lighter weight of the aluminum trailers make them easier to tow, and you can also get a V front end to cut down on wind resistance. If you're hauling a Viper, you need to make sure whatever you buy will accommodate the low Viper approach angle, and that you'll be able to get out of the car once you drive it into the trailer. (A side access door is nice)