As my design has focused on triangle shaped seasteads, I had an idea for the political/community structure of the seastead.
The first seastead would be a floating triangular (prism) structure with 60 degree angles at the very basic level. This person can allow/rent two sides of his structure to two other people who would then attach on either side of him. It would be agreed from then on that they now "own" 60 degrees going out as far as they wish, but not encroaching upon the other person's 60 degrees.
In all, 6 different people/companies/families can attach at a central point and co-exist in whatever social/political structure they wish to set up. They can grow outwards as they wish. It can grow for one or several or none at all, however they wish to set things up.
In such a setup it, should someone wish it, they can pull out of the community any time they wish. Just float their slice of the "pie" out and go where they please. Thus allowing for the original idea of seasteading where if you don't like something you can just move.
I could see several of these little islands forming, each with their own uniqueness with the ability to just motor from one to another as needed. (I also believe that without government regulations other forms of transportation will pop up in a spectacular way...flying, underwater, etc).
Any thoughts on this approach? I tend to focus upon modularity and flexibility as we all tend to be unique and a one size fits all approach is an outdated approach.