Hi mate,
many good areas around angelsey, I suggest pennmon point by the light house, excelent for mackerel, bass and dogfish an dogfish an dogfish and dogfish, Also good peeler for bait you'll enjoy mooching around on beech,
also look further down the straits you see many lads fishing in or around kelp beds with live sand Eels for a good reason, the bigger bass hang rounnd these areas.
enjoy your weekend