I have been using the hair nets mentioned by
tamaralemus above for a week now. Just changed out my first set. I think they are close to ideal, but I do have to resist my desire for a skimmer sock to trap every tiny little particle.
Pros
1. A joy to remove, throw away, and replace. No rinsing out dirty old socks.
2. Water flow virtually unimpeded, even after one week.
3. 7 cents each
Cons
1. They don't seem to get as coated with dust and pollen as a real sock - very small particles probably pass right through.
I guess its all about your preferences. I am going to stick with the hair nets, at least until my first filter cartridge clean, and then we shall see. Until then, I will let the skimmers skim, the filter filter, and use the hair nets to help ease the filter's load.
Besides, I have 96 more, lol