Soft plastic leeches will definitely work for smallmouth bass. Give the leeches a lot of action to make them look as similar to the real thing as possible and you’ll catch some bass.
Popular Techniques
Hop Them Along the Bottom
Use a jighead or drop shot rig to hop these baits along the bottom with some pauses mixed in.
Go Vertical
Working a soft plastic leech over deeper water is a very productive summer and early fall technique for smallmouth bass. Rig it on a jighead and give it some action to catch some smallies.