I have what I can only imagine is a home-built trailer, it's got a wooden deck around the single metal rail and frame, and a built in ramp. It's not fancy, but it's got two tires that hold air, brand new LED lights, and it'll get your race bike back and forth to the track, even if you have a light car. 2" ball, weighs around 200-300 lbs by itself.
In Boston. I can deliver within reason. I have a picture, but this crappy application won't let me post it. Here is a Flickr link
Trailer | Flickr - Photo Sharing!