However, there are three reasons why one might need to add a little weight to this rig: (1) fast current; (2) low-lying fish; and (3) casting distance.
Fast current will make your baits slow to sink, which can leave you missing the fish. Othertimes shad will be way deep—down near the bottom, and without additional wait your rig will not stay low as your reel in. Finally, sometimes the fish are far out in the river, and your cast can’t reach them without addign weight.
Splitshot are tried and true, but they have a downside: your rig can get tangled on them. Which is a drag.
I recently chose to add my weight another way: I added a small barrel sinker above the swivel. So my set -up goes: reel—line—barrel sinker—plastic bed—swivel—dart/spoon rig. You can see it in the video above. This rig has worked marvelously. I nabbed about 30 fish on it in two hours this morning. I got 20-some fish on it two days ago. And the rig has held strong—it is made of 10-pound monofilament. (The reel has 8-pound monofilament.)