Just because you’re fishing a tube doesn’t mean you need to jig it up and down. Prespawn smallmouths can be sluggish in colder water and are sometimes more interested in slurping a sculpin or crayfish off the bottom than in chasing fast-moving forage up into the water column. This dragging technique has scored some of my heaviest smallies, especially in deeper water with soft bottom where these fish often stage before moving shallow to spawn. Green, brown, and gray tubes work particularly well, as they most closely match the forage species that like to hang out in areas of soft bottom. Squirt some liquid attractant into the tube to make it doubly deadly.