There are many different kinds of flounder rig, and the way you tie the rig depends on which type you want to use. Three popular rigs are the fixed-sinker rig, the fishfinder rig and the bucktail flounder-pounder. To make a fixed-sinker rig, tie 12 inches of 30-lb test monofilament leader to one end of a cylindrical sinker. Secure your hook to this line. To complete a fixed-sinker rig, attach the running line to the other end of the sinker.
Fishfinder rigs are more-sensitive than fixed-sinkers; it is easier to feel the fish on the end of the line. To tie one, attach an egg sinker to the running line connected to the fishing rod. The sinker should be heavy enough to carry the hook to the bottom. Tie a black barrel swivel to the sinker to finish securing it. On the other end of the sinker swivel, attach 12 to 14 inches of 30-lb monofilament leader line. Attach a hook with live bait to this line.
To make a bucktail flounder-pounder rig, tie 21 inches of 30-lb monofilament leader to a hook. Attach a short bucktail teaser lure, a small red glass bead, a silver or gold spinner blade and another small red bead to the leader. Finish the rig by tying the end to a black barrel swivel and securing it to a sinker. Choose the bucktail rig if other rigs are not working well.
To create a spreader rig, you need tennis cord or wire, a sinker and two hooks. Secure the sinker on the clip in the center of the rig. The sinker should be heavy enough so that both hooks drag on the bottom. Tie the hooks to the spreader clips. Attach a bobber to the rig to watch for bites.