I have not fished the pier in quite a number of years, but you used to be able to get at them from the beach with about a hundred yard cast from the right hand side of the pier if you were standing in front of it looking at the entrance.
There used to be a gully out there but whether that is still there or not I couldn't say.
Since the sea defense work started there i would think things may have changed.
Your marker spot is the post box right next to the pier.
Wassa in the above post would be the man to tell you, he spends so much time there people say he has moved into the club house on the bottom deck !! prefers the company of fish to humans LOL