I just built a Ski baby, Blu-baby on skis, and all I did was bend 2 pieces of 2x14" FFF, skin down to form skis, then added a rear wire gear to support the back end, and 1/8" dowels between the skis to add strength. To attach them, I simply attached rubber bands around the ski struts to the wing dowels. I can't post pics right now, But I can explain it a little better later.