Plum Island, what's wrong?

I've have fished the Refuge at Plum I sland the last two weekends. I stayed over night both times and only managed two small schoolies the first trip, and four schoolies last night. I've been fishing seaworms, along with plugs(black bombers), and eels. Last year at around this time I experienced some phenomonal fishing up there, with 40-50 fish nights among 4 people the norm. I also caight many larger fish last year. I'm not sure whats going on. Anyone with some advice?