Brother convert, you can bet your last trout fly that frontal systems can be one of the most difficult things for an angler to deal with in the mountain streams. When there is a strong pressure change it causes trout to move to the bottom of the stream and hold tight. To get fish to hit under these circumstances you almost have to place a deep fished nymph right in front of their nose. It must be done slow and repeatedly, and sometimes some very slight strip jerking will help to provoke movement. It may be as much as 24-36 hours before they recover from this. When you encounter a day like this on the stream, use your best nymph fishing techniques. Be slow and precise as to where you drift your fly. Sometimes, even your best efforts will not produce.
Hugh Hartsell---East Tn.