I’m from Sussex so I’ve only fished there a couple of times. Best fished at night when almost anything could turn up!
I was told daylight fishing is best either early in the morning or late in the evening.
The best thing is to ask in the tackle shops. I went over the last bank holiday and the main tackle shop in West Bay was really helpful in recommending where to go. There were some nice plaice being caught closer to West Bay, but I only had spinning stuff with me so I didn’t have a go for them.