It takes time and it might be at least a couple of seasons, or more, before you begin to suss out a new piece of foreshore. As Gadwall says, along with his other excellent advice, be careful. Especially on incoming spring tides with a strong onshore wind (and the dangers can be increased if this scenario is combined with heavy flows of river/stream water coming into a bay).
You say it is a permit area. It's well worth a chat with the warden/ local wildfowlers on the particular dangers of the bay. Local fowlers are not going to give you tips on their favourite hot spots (these can be sussed out by yourself over a long period of observation of from a very safe position), but they will readily give a novice safety advice of situations to avoid.
Be patient and good luck!