Sorcha, see the part of my post about the right and left. The Tucker(s) gets a girl and swings her. As you say, it doesn't look like the Tucker(s) get into the dance after these right and left swings. Or is the call incomplete?

I have a book called Cowboy Dances by Lloyd Shaw, 1939, Caxton Press. Over 400 pages of dances and explanations, but no "Dan Tucker."