Divided Double Duck Quill Wings

[Robert T 0]

Been reading about Catskill flys and ran accross something new to me. It was the double quill duck wing. I did one and what a time it is to keep the four slips lined up. I really don't see the purpose of the double slips as the end result looks no different the using a single pair of slips to me. The only reason mentioned on why double slips were used is because that is how it was done in Briton.

 

Question is: Why go through all that trouble and what end purpose do the double slips server?

 

Thanks for any information about this.

 

Bob