I've been using, and am very happy with, a
Burley Flat-Bed trailer for almost a year. They cost just over 2 bills, and well wort it IMO. I've had up to 120 pounds on it (although it is rated for 100) and had no problems. Cross winds have not been a problem. The hitch locks the trailer to the frame where the chain stay and rear stay meet. It allows the frame to lean freely, and when it's unloaded you don't even notice it.
--A