Is number six the closest to the pebble ridge now?
The 8th green is likely the closest point now. When the new 8th hole opens then the 6th green will probably be the closest point to the beach/pebbles/water.
As an aside, quite a bit of rock/pebble has been built up by machine over the last year or so to the left of the 8th hole/green.
Who knows, fingers crossed, what nature, storms, tides etc will bring in the future though.
Atb