Here's how I do mine, a little silk thread single tied then the tiniest dot of superglue on the tie, fold up the bottom end and wrap the other end around it, let it dry a bit then another little dab of glue and smooth it round with a bit of paper(or finger), trim off ends with a blade, easy enough to remove if you need to alter, slice off the top with a little care and picks off easy enough. Nice, subtle and light on the string.
Ruddy Darter