The bass can detect when the tube ends and when the worm starts when it is dragged by them at 3 feet/sec? There eyes are not that good. Also, if they only want the worm how come the tube does not scare them off? There has got to be a better and cleaner way deliver a worm at a given depth then attaching it to a 3' hunk of hose.
Hmmmm, This will call for some downrigger experimenting next year.