The five gallon size will last all day. Cut a 2 inch wide flap in the top of the bucket and float it tied off the stern of the your boat. The year round residents are giant sheephead, sand bass, calico bass and halibut. During the summer and fall barracuda, bonita and yellowtail join the group. Sheephead of record size live in the wreck but are virtually impossible to land.
Calico bass reside mostly in the wreck or slightly over it.
Sand bass actually recline on the bottom as does their neighbor the halibut. Also surrounding the wreck, living in the mud or sand, are the tom cods and lizard fishes. These are important to you for two reasons. If they bite inside the wreck the big ones are sleeping and probably wont bite. Fishing methods vary but basically are designed with one purpose in mind that is to fish in such a way as not to lose all your tackle in the wreck on every single drop.