Me neither, Mark. I appreciate your first hand account.
But I did end up spending way too much bandwidth looking for as much info as I could find about this pattern. Some info came from 3 different posts at the Small Stream Reflections bog
In the first of those posts, Alan, aka Brook Trout, is looking for the name of the fly he purchased in Fran Betters' fly shop, he doesn't say when, but the blog post is from 1/2013.
In the comments section a gentleman who claims to have tied for Fran's shop identified it first as an 'Ausable Picket Pinn' and then corrects that to 'Ausable Picket Finn'. The same commenter has a website selling the fly pattern:
A second poster in the same comments sections, who also claims to have tied for the shop, identified it as a 'Bead Picket Finn'
In the second blog post, Alan confirms the name of the fly as 'Picket Finn' with Jan Betters, Fran's wife. It also appears that Alan, aka Brook Trout, is using deer hair for the wing.
The third post is simply a consolidation of info in the first two.
Also, when going though Fran Betters' old website via the Wayback Machine, I came across a pdf of the Spring 2006 newsletter "Ausable Currents". There is a picture and short blurb about the fly on the second page:
No mention anywhere of the wing material in the pattern. Squirrel tail? deer hair? kip tail?
How does all this square with Mark's photos of the Picket Finns above? Or his link to the April fly of the Month Picket Finn?
I have no idea, so I'm going with the Spring 2006 newsletter version.