I'm not an expert on what feathers work best, but I do know that the Morning Hatch (in Tacoma) has a helluva selection of feathers and other fly-tying materials. They are very informative and could probably give advice as to what feathers might help you best. Bring a sample jig to help them explain what part of the feather would be most helpful in a jig. I'm sure more technical advice on jig tying will follow!