I also do not want to steal Schmoopie thread. Thinking this twist problem thru without swivels gives me a headache. Fortunately these things are what I love about tackle making. Going to try a few things and share my results in the future. Two ideas I found. One I don't believe from the pic and two is no longer made.
From Outdoor Life, bent shaft and claims it works. Not what I can see.
Vintage stuff, I saw where they just sold the keel. Not anymore.