I'd say 12 at the rocks. The rocks are easy to get to, you come out of the train station turn right go over some random train track and then turn left straight away into a field footpath thing where you should be able to see the sea and its literally right in front of you when you go towards the sea. Skoze get the train from Southend central to Shoeburyness. I'll be going from Leigh-on-sea. Edit: Just looking at what time train I'm getting Edit: I'm getting the 1142 from Leigh-on-sea. It will be a Shoebury station at 1202