Interesting tying comment by Fran Betters

[Byron haugh]

I have watched an old YouTube of Fran Betters tying his Ausable patterns.
I think he was an amazing tier/fisher and, especially for "mainstreaming" the precursor pattern to the Comparadun and ultimately the Sparkle Duns.

I heard something on his video that I had missed before. In the pattern he was tying ( I think an Ausable Wulff), when wrapping the two hackle feathers, he mentions using two different sized hackles. He says, that way, if the longer barbules of one break through the water surface, the shorter barbules one will assist in keeping the fly afloat.

Comments??? Thoughts??