There are weedless "hooks" and weedless "jigs" .... and many ways to turn either non-weedless version into a weedless one.
We have a couple few members that custom make/sell weedless jigs. You can turn a regular hook or jig into a weedless version with rubber bands (size used for teeth braces) or there's a product called Hook Guard (BPS) or Pro Weed Guard (Southern Pro). And, as you suggested, wire can be utilized.