What we have here is a Double Drop Shot Rig. We use it for speckled sea trout when fishing the river system in deep water, and often there is a lot of current. This is very similar to a standard drop shot rig, but we are using a grub-style jig instead of a weight on the bottom. A shrimp-like lure is presented a few feet above.
To rig it, you tie your mainline to a simple barrel swivel, which is then tied to two leaders: one about three feet in length and the other a foot and a half. Tie the heavy jighead to the longer leader; that gives the rig the weight necessary to get the lighter-weight soft-plastic shrimp down to the deeper part of the water column, where it wiggles in the current.
Most of the trout bites will come on the shrimp lure first and sometimes the jig as it’s raised up and moving from the fight of the first trout hooked. So, sometimes you can catch them two at a time, or sometimes they prefer to eat the bottom jig. You just never know.
It’s a great rig because it’s easy to build, fun to fish and works great. Just toss it out, let it sink to the bottom, tighten up the slack and then twitch it back towards the boat. You can adjust leader lengths if you think the fish are closer to the bottom.