Biglad Seaton Sluice beach is a place where the holes tend to run parallel to the shore rather than at right angles so it can fish at various stages of the tide. A couple of marks to try are at the Astley Arms, a pub near to the south end. Park and walk straight over the dunes, or the Middle Toilets - same sort of set up. Don't know what you'll get this time of year and it'll be better if you have a look first to suss out the holes.
Oh and by the way there's some strange goings on by the Middle Toilets:kissing: