Big Flys = Big Fish
I suggest using large (6"+) Bunker or Herring Patterns (whatever big bait is in season at the time) fished on fast sinking lines (450 grain or higher) in swift moving water (like rips or deep channels). You can also use large half-n-half, deceiver or streamer patterns (like Skok Megamushy or Flatwings). Otherwise go with intermediate or full sinking lines (250 or 350 grain) around large boulders, humps or other subsurface structure with the same flys. Squid patterns are great, but are only really useful in the Spring when the squid are actually in the Sound. As mentioned before, patterns that push water will be most effective. I don't do it, but I've heard of some anglers that got desperate enough to soak their flys in bunker oil for 24 hours before fishing them to add another dimension of attraction. I would probably just go ahead and fish bait before doing that (personal choice), but you should be aware of all your options.