It might be a good idea to look at the posting dates b4 replying to posts. This thread started in April 2009, nearly 6 years ago.
In the 1970's, I towed a what turned out to be a ~2800# sailboat with a trailer hitch rated for 1500#. God was with me and nothing broke. If something had broke and someone was killed or injured as a result, I would in all probability still be paying.
A charter member of the Buffalo Plaid Brigade!
Whether you think you can or think you can't, you're right.