Harry Cox[ Norfolk Traditional singe]r made jig dolls and used one., a friend of mine has one which he made
Jim Eldon made one for me which i used to use with a harmonica in a brace, however the design of the feet and the joints of the feet vary, the ones that dance the best in my experience, have a curve where the foot[ a curve that goes forward], where the foot joins the boot or clog so the boot or clog dances better ,that is the design of the one that Harry Cox made, my jig doll just has a clog with a perpendicular join to the leg.