Read with interest the posts to Frank's thread. A couple of thoughts for
what they are worth. First, do NOT attempt to imitate spinners and duns with
the same patterns. The duns are noticably darker in body color, the spinners
are nearly dead white. Second, avoid both long shank hooks and stiff
extended bodies on the spinners(duns seem less of a problem, as they a
gulped rather that sucked in like the spinners). The feather type extended
pattern works well, and if I might suggest a Dick Talleur idea, so does a
simple poly yarn extension. The pattern:

Hook--12 standard dry fly
Thread--White 6/0
Body--piece of white poly yarn, about 2 inches long, singed to melt at
either end. Lash this to the body over hook point, extending to rear.
Thorax--black fur, your choice. I use squirrel or rabbit.
Wing--heavily tied longish grizzley, 2 or three feathers wound hackle-wise
and clipped top and bottom.

There you have it.....easy to tie, painless to lose. The fish eat them up
like the real thing and they stay in their mouths real well. Go to it
guys...
one more I don't have to make batches of giveaways for you all!
Tom