Julian
Interesting way to do it.
I think however I'll stick with the alternative that seems to avoid the risk of the line from the anchor to the shore being at risk of being seen but still run over.
Using a line off the bow to the endless loop so that the boat is free to turn with the wind and current allows the endless loop to lay on the bottom away from eyes and props that can cut the loop or snag passing boats. Experience has shown that that it seems many boats will pass between the moored boat and shore.
Pic of mooring at Sth Stradbroke for a M & G a while ago.
Cheers
Chimo27JulyM&G AF001.jpg