Bobber and spider rigging are some techniques for building crappie rigs. Some of the rigs are designed for shallow water use while others are effective in both shallow and deep water fishing environments.
Using a bobber float is one of the oldest and most effective techniques for crappie rigging when fishing in shallow or medium depth water. The rig consists of a live bait hook or jig tied to the end of the line with a fixed split shot attached 6 to 12 inches up the line for dingy or murky water and up to 18 inches away from the hook for clear water. The bobber is mounted on the fishing line 12 to 36 inches above the sinker depending on the depth of the water and the suspended fish. The bobber is allowed to drift with the wind or kept in one place for crappie that are holding tightly to cover. An alternate method is a slip bobber technique that allows the line to flow freely through the bobber until it reaches a fixed stopper further up the line.
Spider rigging is typically used for trolling. The rigging technique usually incorporates a slip or torpedo style sinker that can slide on the line, which is attached to a snap swivel that is connected to another length of line that has two hooks mounted on it several inches apart. Typically three or more rods, depending on state fishing laws, are set up with spider rigs and baited with live minnows. The spider rigs are positioned around the bow of the boat and slowly dragged through deep or shallow water.