[rick3000]

I read a alot about this a while back. In my opinion th ebest design is this one:
http://members.rennlist.com/1porsche/Trailer_Hitch.html

I have seen people towing two jet skis with a Boxster, but most people tow a trailer with autocross gear. The weight of the trailer is not the problem, its the tongue weight you need to worry about.