Found while cleaning out my office: a networked jeans twill draft for 8 shafts, no dobby. Weaves nice circles with a conventional treadle loom. Repeats on 30 ends & picks. My notes say "These spots look even rounder when the cloth is actually woven. Use a sett halfway between plain weave and 2/2 twill." First a single repeat, then three repeats each way, and then the WIF file is you'd like to try it out for yourself. Send me a picture!