There are not that many stripers in the Providence River this winter. To make matters worse, it seems that the fish that are around are on the fussy side. The ole reliable Zoom flukes on a jighead are not working these days. Instead, these winter fish would prefer to hit a plastic worm fished on a jighead right along the bottom.
The few fish that I have taken in the last week after dark have all been caught on worms. The best worm to use is one with a long curly tail. You'll find these in stores under the name of "ribbon tail", "C tail", or "curl tail" to name a few. The dark colors such as black, brown and motor oil all work well. Mount them on quarter ounce jigs. Cast your offering out, let it sink to the bottom and reel in very slowly trying to keep the offering near the bottom. The hits are usually very subtle as the fish just mouth the offering.