At 'Master Trees', activity is far from constant, with much depending on weather (sun, cloud, wind and temperature) and time of day. Most activity takes place between 12.30-2.30pm.
When quiescent, males can be spotted basking high up through binoculars. Sometimes you spot only the antennae protruding out from a leaf. Also, in very hot weather, during the afternoons males can be located tucked up, wings closed, inside leaf sprays, by scanning the foliage with binoculars.
You can easily miss the entire show by being in the right place but looking in the wrong direction. Often, you need to look into the sun, as males usually perch and patrol along east-facing and north-facing tree edges.