if I go two hours before high tide I found a cut they go thru to get to another 100 yards of marsh. As the tide comes in they eventually come in. I watch them come down towards me , cast ahead, let the fly sink , and then just tick it a few times and they can't stand it. I caught one about 22" today, the only red I saw.
And yes at absolute high tide it's hard to see them. When the tide turns they start heading back to the creeks. The fiddlers( their main food source right now) will go into hibernation as the water cools and then this fun and games is over.
Speaking of skinny water, they will come thru sometimes with their backs exposed trying to get to the fiddlers!!!