For my 2 cents worth, I've been tying Wally Wings in place of Wonder Wings. Do a quick search on this site for "Wally Wing" and you'll find a great tutorial by none other than Wally Lutz... the innovative tier who popularized the wings. Some advantages are that they only require a single feather and the center stem is removed to make them even lighter. I use them on spinners, duns, and even posted up for parachutes.

Fixer
aka Bruce C