Thanks Spence, Shawnny, Motrout.
While I love the Ausable Wulff and find it very productive, I can not say it's my favorite fly. There are just so many that work well. I guess if I had to select only one it'd be the Leisenring Spider. By far, this fly has taken many fish for me and some real beauties to say the least.
This is a photo of one tied on a regular wet fly hook
Leisenring Spider
This link shows a larger photo and gives the dressing.
It is not my own pattern, but it sure does work. I carry a number of these in three sizes, and I am very seldom disappointed when I fish one. Tying season will be upon us, soon, and everyone should consider whipping up a few. The link shows one tied on a short hook, but it can also be tied on a standard wet fly hook. It's a winner!
Mark