With abundance of terrestrial insects around streams, fish tend to feed more and more at intervals. Thus there will be good days and slow days when one presents ant, beetle, hopper and such patterns. That coupled with a clear, bright atmosphere can make for particularly slow conditions. Look for the partly cloudy days with threatening thunder showers to be best bet for times with action. In particular, we have reports of the Gallatin River in the Park providing some great action for those presenting traditional attractor and caddis life cycle patterns. We’ll bet that Fall River around Cave Falls, which is bigger, but similar water, would also produce well to these types of flies.