I started tying these over a dozen years ago to fish on the San Juan, then found they worked just as well on my home tailwater, the Guadalupe River in Texas. In fact, I had a guide buddy of mine who swore by them in Summer Brown or Cream for picky Guad trout. I now have a whole rack of Coats and Clark thread in different shades to tie the Yong Special and the midges originated by Don Holbrook and Ed Koch in their book, Midge Magic. Nice tie and vid, BTW.