Dubuque rigging is basically using a 3 way with a short dropper with a jig, and a little bit longer dropper with a bead and a hook or whatever you prefer.
Welcome to IDO! The dropper weight varies greatly depending on the depth and current you are fishing. I’ve used jigs ranging from 1/4 ounce to 2 ounces, but usually in the 5/16 to 3/4 oz. range.