RE: Caller's duties/techniques during a 2-pole course
In our T-34 two pole racing, a number of people pick out a landmark to call ready and a landmark to call turn when the plane reaches the landmark.
If the flyer gets out of line then one needs to pause a moment to avoid a cut. So it works best when the flyer flies a consistent line which is also true for counting methods.
Many (perhaps most, never polled) of the top pilots call their own turns. They may get a ready from their caller but they basically make the turn on their own. Caller is basically there as a spotter and to let them know where they stand in the race and where traffic is coming up.
- Joe.