I make my own slip knots for my slip floats by using small diameter braded line in high visiablity colors. I tie a nail knot onto coffee stirrers and this allows me to pre-tie the knot like the store bought ones. I bought a little tool to help tie the nail knot at a fly supply store. One coffee stirrer can be used to put several knots on and I have better luck keeping these from getting lost or tangled. You can also cut them to smaller lengths for individual knots.
Dental floss will work also,Use it the same way!
Rowdy
Remember This Beautiful World is
''Only Temperary Housing''!
Rowdy