I was out on my own boat this afternoon and had 14 codling, most small but the best 6lb+. Also a small pollock, pouting and ling. Most of the fish came off an inshore wreck, with only a couple of fish from the rough ground.
If you're on a charter boat you might struggle a bit for fish - they seemed fairly thin on the ground still (although today's the best fishing I've had in April from Dunbar). Another 2-3 weeks should make a big difference.