Major P-off gruezi - 'shifty' was one sweet board.
WARNING
1) Dont assume that fishermen = safe.
I always have but I was down there; sitting waiting for wind (must have been before my 13M REV arrived

); when two dudes came back from the groin with rods and started checking car interiors pretty thoroughly - till they saw me lounging back in mine. Dont know what car they were in as they gave it up straight away then headed across the dunes towards the jetty side ?
AND
2) Young dark skinned youths on small but fast cross-country bike/s are defintely regular offenders. Well known to police & security.
Dont leave your car or gear if you see them anywhere around the place. Apparently they are very bold & aggressive if cornered - just like any form of filthy scum-eating rats.
They will remove gear bit by bit, hide it in the dunes then return later with a vehicle to collect it all up. If you are a victim it might pay to do an immediate walk around through the bushes along the roadside.