I'm definitely no expert, but this is what I've learned from fishing Demo, Sore Thumb, and Field 6 this year, and this year only. (others please correct me if you beg to differ): At the inlets (which would be sore thumb, Cedar, and Demo) last two hours of the outgoing, and first two of the incoming. For the open beaches, away from the inlets, moving tide, close to high, out going or incoming.