From Bordeaux, drive to Soulac and continue at the very end at "Le Verdon". There is a jetty and the beach is INSIDE the rivermouth of "Gironde". It's not at the ocean....
Well... this spot breaks only with a HUGE W-NW swell and, this is the interesting part, a West wind because the beach is inside the coast. It works only 2 hours around the high tide. The tide must be a big (coef: 100 and more...). When it's on, it's a shallow tube machine. Better for bodyvboarders but experimented surfers will score good barrels.