Trailers can be tuff to find and plan to rebuild it if your looking at used. No one seems to really take care of them to well...tires rust, calipers freeze up. Not super expensive to re do but a lot of work.
You can contact the service providers or transporting companies, they may have. Else they will give you the information about where it will be available.
Comments
Not sure if you've looked at this:
http://rinkerboats.vanillaforums.com/discussion/7915/2005-road-king-tri-axle-18k-trailer-for-sale#latest
Dream 'Inn III -- 2008 400 Express