Skill Trends — by wind band

How this works: every Training Log (and, later, race) session carries the wind grade (A–X) and per-skill scores. This matrix segments each skill by the wind band it was sailed in, so you see where a sailor is improving and where they plateau by condition — e.g. strong in light-air upwind (B) but stalling in heavy-air control (X). Empty cells reveal bands that still need training volume. At event close, the Federation Report auto-summarises each athlete's biggest gain and biggest stall from this same engine.