No tides and currents to worry about on the Sound except wind driven, the ocean region is a different story. There are plenty of boats with 6 ft. draft around here but I admit that I felt more comfortable with my 4 ft draft. There are plenty of times I would have been aground with 6. It is really an issue mostly when going into the creeks for anchorage. However, because the water depth is dependent on wind direction, with strong SW or W winds even some of the marinas have pretty shallow water in the entrances and at some of the docks. Just part of the local knowledge. Keep in touch.