Vagrant,
It appears that the dark blue beaches on your image should be 'PUBLIC". Is that correct? I've labeled them "No Problem?" from the Walton County GSR. Notice how the property lines stop at the dunes.
Why doesn't the state just use a little eminent domain, and take the beach back for the public for these few PROBLEM properties? Back to the vegetation line?
The state will not act on this issue. We all will have to act on it. It will be a big battle but it looks like one that can be won according to history.