In order to describe the methods used to catch fish I shall break the season into months, first dealing with bank fishing and then with boat fishing.
Of course the trout don't suddenly switch from behaving in one particular way to another, simply because the date changes. The point is trout do suddenly switch behaviours, but this is not because they are familiar with the calender. It's because they want to frustrate us, keep us interested and, well, because they are trout.
However, for the purposes of this section, it is by far the easiest way of dividing up the season.
You will also find that there is a lot of cross-referencing going on. One way of dealing with this is just to read this whole section from start to finish. That was how it was written after all.
Lastly: Stillwater has been written with the UK in mind. All of these methods travel well. You just have to adapt the timing of their use to your particular season.
If you are unfamiliar with the English weather I can help! April is cold, windy and rainy. May is cold, windy and rainy, until about the third week when the sun suddenly appears for one and a half weeks. Then there is what the English (and I am English) refer to as a 'heatwave' and we take our jumpers off.
June brings back the cold wet weather. It may not actually be as cold as April was (although it may be) but it will cetainly feel it since we have just had a 'heatwave'.
July is a strange month; it has no weather.
August on the otherhand has weather, although we wish it hadn't. Generally it is hot (hot in England being above 20 degrees C) and sunny. Near the end of the month it also get's windy.
September sees the return of the cold and wet weather. And there you have it, a typical English summer. :-)