Having survived the night, the next day dawned blustery but no rain and so we set off to find somewhere to park for free. A detour lead us through a sand dune at the end of the bay heading North West. After turning round we saw motorhomes parked a little further round the bay. We returned back to the main road and up the lane which we presumed would have those motorhomes parked at the end. The lane got progressively narrower and more water-logged. Then the final 10 ft (ish) were just a muddy quagmire. There was no way our front wheel drive Rapido would make it so we had no option but to turn round. Mike did a four point turn and returned back up the lane . The front wheels lost traction at one point but he maintained a slow and steady speed - no revving as this could cause the front wheels to spin faster and make the situation worse.
Luckily, we made it back to the main road unscathed and decided to stop for lunch. While we relaxed over our hot drinks I did a quick search for somehere using our Sat. Nav.
Anyway, now back to our lunch stop. I found a place listed with the Camper Stop entries at a place called Conil De La Frontera. A free beach front car park. What a gem of a place. Photos below. We were able to stop there overnight as we were parked, not camping. If we had set out chairs and similar paraphanalia we would have been judged as camping and quite likely moved on. In the event we stayed two nights. Enjoyed a great walk along a coastal path.