Black marabou leach and ryacophila emergers for freshly stocked trout. If that does not work then start changing flies like crazy. A lot of stockers are going thrugh a period of "Culture Shock" after being released. The only predictable thing about them is the fact theat their behavior is totaly unpredictable. And yes - the longer they remain in any water the more cautious they get. Like their natural instincs are slowly waking up...
Life is what happens to you while you're busy making other plans. - John Lennon