Man you've gotten great information. It depends on the size of the fish. Smaller bluefish taste better than larger ones. However if you have larger fish (over 4 lbs) cut away the dark flesh it has a strong oily taste. Also like Bigirl said you can soak the fish and that will take away the strong oily taste.
A great fish to catch. A 10 pounder will wear your ass out if your not skilled.