There are all kinds of communties on the water
throughout the Puget Sound. I read a book a while back about a bunch that sqwatted on old barges. There are liveaboards that are downright unfriendly and give me a dirty look everytime I am working on my boat
in thier marina- and then there are tons of people inbetween the two extremes. My advice
to you is to decide how you want to live, then find a group of liveaboards which share the same ideals.