I know the upper reaches of Waquoit hold stripers year round; I suspect Great Pond/Coonamessett does also.
The place I keep meaning to explore, but never do which sure looks like a mirror of our favorite creek is the Back River.
Out of curiousity what was the crowd like today - last week there were 3 cars in the lot when I got there at 10:30; perhaps 15 when I left at 1...