Why not check out the G20 homepage and all their great PR videos. They probably have a detailed account of what happened. .
In the aftermath of the 1997 APEC summit in Vancouver, a Canadian judge concluded that protesters have the right to be seen and heard, which means that visiting leaders cannot be shielded from lawful protests. Canadian officials have determined that this means arrangements must be made so that protesters will be visible to those participating in the summit. In a 2007 summit which brought together the Canadian Prime Minister and the presidents of Mexico and the United States, security organizers restricted demonstrators to a forest clearing more than a kilometre away, while using a video feed to beam images of the protests to a large monitor where the leaders could watch if they wanted. In response to questioning about demontrations and protesters, a spokesman for the authorities explained, "It remains our view that what they don't have the right to do is to preclude leaders from meeting. We will take the steps necessary to ensure that leaders can meet and that protesters will have an oppurtunity to protest.
Instead of trying to put demonstrators on islands, the G meetings should consider having all their meetings on Sea Island like they did back around 2004. It's a nice wealthy resort island, safe, and secure. The PR videos on the summit homepage look like a Hollywood premiere anyway. Why not go one step further and make a reality show out of this, like Gilligan's Island, where all the wealthy can squabble about what to do with our tax money. Thurston Howell the Third can be the chairman. Moreover, have feeds where viewers at home can watch the proceedings and vote summit ideas in or out. .