There is more to using streamers in stillwaters than tying on a Woolly Bugger, Muddler Minnow or Zonker and casting willy*nilly about.

Streamers can be used as both imitative patterns and as attractors. But the first step in understanding the proper use of streamers in the stillwater environment is understanding the food chain. If there are forage fish (minnows) such as dace or fathead minnows present in reasonable numbers then you may be using the streamer as an imitative pattern, providing that the trout species in the stillwater are of the type that prey an forage fish as a matter of course.