If you are fishing an area where you are sure there are no toothy fish around a combination swivel with your sinker line about 50cm and hook line slightly shorter to clip to the sinker when casting, most 8/0 hooks like gamas or big guns will work for the bigger flat fish but for blue rays a 5/0 will work better used with a cone sinker as they like a bit of movement in the bait, on the North coast I opt for a full metal jacket with an 8/0 gama big bait circle, the reason for the full metal jacket is to help land the fish with ease will try and post some pics tonight