I fished the 61st St Pier about 3 weeks ago and was very pleasantly surprised at the variety. I caught a hog of a bull red, lost a big jack crevalle, and saw a couple more big jacks/reds hooked and lost. Saw sharks caught, a couple of smacks, lots of croaker and oddly enough only a couple of hardheads. Like the fella above said, lots of different techniques being used. And LOTS of mullet around. Always seems better early in the AM. Definitely bring a couple of rods. One stout rig for reds/sharks/jacks and something lighter for throwing hardware at the smacks or ripping lures through the mullet schools. When the water is right, it's a heckuva good time. Oh, and if you have a drop net bring it. They have one at the pier office, but if someone else has it, you might have to wait.
Good luck to ya!