In the height of summer, our stillwater fly-fishing is a fickle affair. Picking your day is difficult, and hap hazard at best. If like me, you are a working man, you already have the formula wrong. You will not pick your Trout fishing days: Government and organised religion will do it for you. You will have more fishing days available over Christmas, than at any other time of year. And these are the days you will be lumped with: The water is flowing out of every orifice in the hills. It rushes and gurgles through tall lush grassland. Grassland that