Why an island?
If you wanted to help create a community that is 'detached' from the society that you currently live in then there are lots of places in mainland Europe to do so.
That way you won't have to worry about immigration issues, having to cross a bit of ocean every time one of your community needs medical assistance (child birth, broken limbs etc.).
Or if you plan to trade a crop surplus with the locals or provide labour and skills for theirs it'll be easier to move your goods and yourselves back and forth on the back of a cart rather than relying on the availability of a boat, someone competent to sail that boat and clement weather.
There are as you've mentioned several 'eco' villages around the world already, you may want to consider working in one of those for a year in one of those before you attempt to set up your own.
Just don't try to set up your alternative community in France...
http://www.guardian.co.uk/world/2009/jan/03/france-terrorism-tarnac-anarchists
If you wanted to help create a community that is 'detached' from the society that you currently live in then there are lots of places in mainland Europe to do so.
That way you won't have to worry about immigration issues, having to cross a bit of ocean every time one of your community needs medical assistance (child birth, broken limbs etc.).
Or if you plan to trade a crop surplus with the locals or provide labour and skills for theirs it'll be easier to move your goods and yourselves back and forth on the back of a cart rather than relying on the availability of a boat, someone competent to sail that boat and clement weather.
There are as you've mentioned several 'eco' villages around the world already, you may want to consider working in one of those for a year in one of those before you attempt to set up your own.
Just don't try to set up your alternative community in France...
http://www.guardian.co.uk/world/2009/jan/03/france-terrorism-tarnac-anarchists