Hi Keith,
My girls used to do dancing, this is what they did for speed in changing shoes. You get thin elastic and thread it through the shoes, once at the top tie it and wind it around the underside of your shoes until tight enough. I am not sure if you can actually buy laces but this way will be much cheaper and do the same job. They used shirring elastic, but you would need 1/4 to 1/2 inch elastic. Hope this helps. Lorna
