Hi,
I just created a series of dries flies, emergers.. I call them the Puffball flies. The wing is made of a CDC oiler Puff, tied upside down the feather makes a small ball, very resilient.
One of the fly:
You can see the complete series and a step by step tying sequence at:http://www.pechetruite.com/Mouches/tying-puff.htm
I'll test these flies in action during the coming season but I wanted to share the design.