A pier fishing rig can be an efficient tool for catching big fish because fishing piers typically hold a large amount of smaller bait fish underneath them. The particular type of pier fishing rig and type of bait that works best depends on the species of fish being sought.
Anglers going after halibut and other flounder often use pre-tied rigs with a 2/0 circle hook and bait them with mud minnows or strips of squid. When used with incoming or outgoing tides, they usually attach spinners to the rig to increase the visibility of the bait as it rises and falls. For species with sharper teeth such as a bluefish, pre-tied rigs with wire leaders are preferable.