Your double knit quilts are beautiful, especially the flying geese. In the 70's a friend worked in a garment factory where they made all sorts of fancy dbl knit outfits. She would bring home the scrap bags and I made my 1st quilt from them. Did brick sized pieces in all colors, like your flying geese, and put prairie points around the edge for the border. Tied it, quilting is nearly impossible with all that stretch :-D Also sewed strips of the dbl knit and then crocheted rugs in all sorts of colors. They, like the quilt, wear like iron. Another rug was just pieces/strips ea one sewn across the middle onto a backing....another piece sewn close to it (push side of 1st one up and sew the next one down the middle) and so on. Makes a cute fluffy bathroom or bedroom rug. Yes, the ball point needle is your best choice for knits. :D