I just cut a little flap in the skin and tuck the legs through the flap -- no trussing. But now I notice you mention wings, not legs, so maybe we are talking about something entirely different?
In case you do mean the legs, check out this link (which is the recipe for amazingly good roasted chicken):
http://thepioneerwoman.com/cooking/2010/04/herb-roasted-whole-chicken/ If you scroll down through the photos, the one fourth or fifth from the end describes the leg tucking process and has a picture.
Good luck!