depends on where you plan on throwing lines and at what time.
if you bring a cast-net you will not need any bait. right now you should be able to see the shrimp in the water.
starting in the north surf, you best bet will be to have some fresh shrimp. guaranteed fish (alot of hardheads). mullet will work as well and both will be plentiful. artificially i really like weighted spoons in the surf, but with any lure you are going to need some weight to get those lines out there.
moving along more south, mid-city, shrimp again will work, but by this time there is significantly more traffic from a human and debris standpoint due to all the hotel traffic. this is uaully alot harder to fish in and i think the trash may keep alot of the smaller fish away and thus the bigger ones but i only have fished those spots in the morning when those previous points do not really apply. for some reason though, this spot is the most accessible but has the least amount a fish.
and then to the best part in my opion, the south-end of the island. again there is some traffic on the beach access points but other than that there are many open spots in between crowds. as you get to the very south end of the island where the channel is located, you will find the jettis. here you can go straight into the surf and find a spot to cast. God knows how many or how big the fish will boast. competitions have been won there and lives have been lost there. but the best bait will be what ever is around; every fish makes it way through that channel into the bay.
and here the secret. there is a boy scout camp on the very south end of the island. it is actually a boy scout adventure island but due to slow turn-over through the years it has ceased to produce enought volume to be considered a venture. you can walk a long the the jettis to get to a point in the island where the surf meets the bay. Right there i have spent many nights and days scuba diving and fishing along those rocks. sometimes theres is a 3 ft chop and sometimes the water is as clear as day. multiple and plentiful creatures will be found there so any kind of bait goes.
RAB