I did post a wildy by the sea wall in Seasalter, although I see someone tried it some time ago and was a bit 'boy racer'.
There is a SUPERB site just up the hill above the static caravan pk but you will have to drive round the block due to a width restriction, a little bit of traffic noise from the dual carriageway, but first class showers & toilets.
Good luck & let us know what/where you find.