Four beats. The first 3 are evaluation windows, when a coach scores her own players against the rubric. The fourth is not an evaluation at all. It is what the first 3 get used for.
That last part is the whole point of running a cycle rather than a one-off. Tryouts stop starting from scratch, because by the time they arrive the club already has a season of evidence on every player, gathered by the people who watched her all year.
The version built today runs two evaluation windows a season. The loop above draws three. A third window costs one more round of coach forms, and buys two things: a coach can correct course inside the season, and every player carries three data points instead of two, so a flat stretch or a jump is visible rather than inferred from the endpoints.
Spring and summer sit outside this loop on purpose, so the loop itself can be agreed first. The season-end data does roll up to which skills each age group is weakest in, which is the clinic-planning conversation, on another day.