If I had to choose 1 fly or lure or bait for all the differnt types of fishing I do, it would have to be a black wooly bugger.

Works great on just about all trout, salmon, steelhead, lg/sm mouthed bass, crappie, perch, walleye, tiger muskie, and just about anything else around here. All you have to do is figure out what presentation works best for the species you are targeting. For example, kings love them dead drifted, dollies and steelhead nail them during or after the swing, and warm water fish like them stripped in at various speeds - with short to long pauses to let the fly sink a little. I've had good success with these on trout at Rocky Ford as well as the Snoqualmie forks. When the dries aren't working for me, this is my 2nd favorite option.