[fsstnotch]

20' is not "small" by any means. Too big for a toureg, but not small. Especially if you only plan to use it to haul a cobra. I have an 18' open trailer and it's big enough to haul a pair of sand rails, I even put my F250 crew cab 4x4 diesel on it once just too see how big it really was. It fit just fine... the expedition's suspension didn't like all that wieght, but it fit! haha if you are planning to only use the trailer for hauling a cobra.. a 16' trailer would work just fine, 18' would be better. Anything over 18' to haul a little cobra is just going to be overkill. If you are running a 90" wheelbase cobra, it's only like 10ft long! haha

Ahh.. just trade the toureg. Get an F450, and a 45 foot enclosed trailer. I'm pretty sure the cobra, or 4, should fit in there.