There are times when I really appreciate living in Montana. Reading threads like this really points it out!
Here, all trailers (regardless of size or type) are given PERMANENT registration. The same goes for all motorcycles, ATVs (yes, ATVs can be street legal), boats, and vehicles 11 years old or older.
The PERMANENT sticker on the license plate can cost 2 to 3 hundred dollars, but it is worth it!
However, when income tax filing time rolls around, I get an urge to move to Wyoming.