Grand Rapids Christian High School '27
How much better or worse boats do with this sailor crewing than their skipper's rating predicts, shown on the skipper scale so crews can be lined up across teams. Percentiles compare against rostered crews that season (league) or teammates (team).
How crew ratings work →Crew effect over their whole career, not scaled to a team: 76.68 percentile among ISSA crews with 30+ races. Uncertainty ±0.112 rating points from 34 races with rated skippers.
How crew ratings work →No season rating yet: needs 8+ crewed races in a season.
| League | Name | School | Year |
|---|---|---|---|
| ISSA | Cohen Koops |  Forest Hills Eastern (MI) |
'27 |
| ISSA | Cohen Koops |  West Michigan Aviation Academy |
'27 |
| ISSA | Cohen Koops |  Grand Rapids West Catholic |
'27 |
