I was on the Susquehanna two days ago, and had an OK day with tubes. But my buddy was throwing something similar to the 3.75 inch Zipper Drop Shot Worm on a 1/8 oz football head. He got big for the day at 19.75 inches, went the following day and got a 20 inch smallmouth and a 22.5 inch walleye on the same rig. I think that it would be even better on a 1/16th oz Shake It with Screw Loc. Football heads are great when fishing reservoirs that don't have much rock and other snaggy areas like out Mid Atlantic rivers, but a small round head seems to do better. Whatever you go with for river smallmouth, keep it simple, streamlined and relatively small. They seem to question things with big flappy appendages that the largemouth seem to fall all over themselves about.