In clear pools in the late Fall/Winter toss a big dark colored salt impregnated tube on a standard 1/8 insert head close to where you think a Smallmouth might be, let it glide to the bottom on a tight line, take up ALMOST all the slack, put your finger on the line.....and just hold it motionless for as long as you can stand it (for me that's about 30-40 seconds).
There's something about seeing that tube swim to the bottom and then just sit there that will make them pick it up and move off with it. The really cool thing is that this first starts to work for me when the leaves get bad making almost any other presentation impossible.
Standard jigs and worms don't work for this, only tubes, and preferably big fat ones. Its gotta be the way they sink that gets their attention.