Dan, patience

- That area is very productive (and dangerous too). I have not fished it yet from shore but I've fished off of it from boat before. Many people express both how good the fishing can be but also the extra safety precautions necessary to use there...
As far as best to use? Eels, Plugs, & Bait all have there places there and else where. I'm not good enough to tell you to use this plug, on this rock, with that wind, and that tide. I will say that a popper, a needle fish & teaser, a wooden swimmer/darter - with or without teaser should work for plugs. Soft plastics will work, Eels will work, as will chunk bait...
That area would be good for you to inspect during daylight hours at lowere tides. Figure out where you would fish (pick the easier spots first) and where you would bring a fish in when you get one. Then fish it a couple times for a couple hours before sunset to an hour after. Learn it this way. Then you'll be familiar enough with a spot...
I also HIGHLY recommend you fish the spot with another person. I've often thought of going there, spur of the moment, but have changed my mind fishing solo in a hard spot that I have not surffished before... just not safe...
Also check out that On the Water book on surf casting RI...