Then there is , As rare as rocking horse sh#t.
Back on topic, Blueminds.
Unfortunately, boat trailers have a pretty short life, especially if used in salt water.
So, there will be no originals around anymore.
The second unfortunate thing is that new trailers are more expensive than the value of the boat. So not many people build new.
You options are to build yourself, convert a pretty heavy weight car carrier trailer or have the boat moved professionally.
When you think of this boat loaded with gear (batteries, anchor and all sorts of other stuff) you are looking at a really heavy load.
Gary