I'm going to regret asking this, but here goes:

Some of the people on my feed appear to be members of the Sovereign Citizen movement. They usually propagate a theory that there were circumstances under which their country serruptitiously shifted from common law to Admiralty (maritime law), which is where they derive all their language about boarding and vessels and "traveling" vs driving, etc...

So these multiple countries all conspiratorially shifted to maritime law at some point in their history -- what is the common strategy by which they did it and what evidence does the SC movement have that this happened?