I have to admit I really like your idea

http://www.zeitgeistaustralia.org/forum/topic/making-the-venus-project-a-reality-by-actions-not-words
I have to admit I really like your idea, I had thought about doing something similar to this in the centre of Australia, but like you said that would still be subject to the laws of this country and no matter how many people got on board a few people would still control the system refusing to let it go.

I think a sea based city would be a very workable solution to the problem, unfortunately I don't have a degree in Engineering or computer programming, but I have had an interest in these for some years now and would be willing to follow these interests up if I had somewhere to go with them.

I do disagree on 1 point however, in our current society money is a necessary evil and to build a sea based city will cost many millions of dollars, so I think it would be a good idea to start putting some money away for the project when it finally leaves the planning stages, as building the city won't be enough you will also need to come up with ways of collecting resources from the ocean without destroying the ecosystem ie. eco friendly deep sea mining and such (I do remember hearing some years ago that apparently you can extract some metals from the ocean waters themselves). I would be more than willing to donate some money each week to a project like this if I knew it was going somewhere.

A couple sights I found with a quick google

[url=http://edition.cnn.com/2009/TECH/03/09/floating.cities.seasteading/]

[url=http://www.seacity.co.nz/news_media_colliers.htm]

[url=http://oceania.org/]

I only had a few minutes to look into it so I don't know much about what these people did but it might pay to find out how some of them either did it or proposed to do it, might be a place to start.