How much does the manufacturer's state you can tow? I didn't see what type of minivan you have. Our Dodge Grand will only tow 2000 lbs. We have a CHV custom van to tow our TT. Be very, very careful and follow the towing capacities recommendation. It can void any warranty you have, plus it is a safety hazard.
I guess I'm telling you this because we screwed up when we bought a "tow" vehicle. The salesman said it would tow anything, but it wouldn't!! We had a F150 4x4 Flareside without the right axle ratio.
Check out this website for advice.
http://www.irv2.com/
Click down on Forums. Lots of experienced campers...
Just a quote: (
http://irv2.infopop.net/2/OpenTopic...56091522&m=3840917781&r=2740942881#2740942881 )
"I guess a lot of us are getting a little weary of warning minivan owners away from serious TT towing. There's a lot of technical detail involved, but the bottom line is, unless you have a stripped model with no A/C, etc., a nd plan to travel alone with no cargo in the van, that 3500 lbs. means very little. With a well-equipped model, a typical family and tools, etc. in the van, around 1500 lbs. (empty weight) is about the limit, considering both GCWR (gross combo weight rating, the max tot al van plus trailer, both loaded for a trip), and especially tongue weight, which is very limiting for minivans. The only exception is the Astro, which is built on a 1/2 ton pickup chassis, has the drive train, springs, etc. to handle the load. Even for it, about 4500 is max. You are absolutely limited to popups. Be very careful looking at trailers, don't go by the empty weight given in the brochure, that doesn't even include the battery and propane, etc. Look at the gross (full load) weight, and rea lize that the tongue weight will be at least 10 pct. of that, and will have to be borne by the rear axle, which has its own GAWR (gross axle weight rating). Think about trading up to a full size van, or a short bed 1/2 ton crew cab pickup if you don't have more than 2 kids."
Good luck!