Overview of W.H.M.A.F. instructors under master Ko Baek-yong.
International instructors
International instructor: Ko Se-hwan (6th dan)
- Leon de Heus (8th dan)
- Ko Se-hwan (6th dan)
- Klaas Barends (6th dan)
National instructors
- Jenne Meyster (6th dan)
- Wim van der Linden (5th dan)
Instructors
- Edith Boogaard (6th dan)
- Mick Kohnen (5th dan)
- Evert Bos (5th dan)
- Jelle Post (5th dan)
- Paulus van Slooten (5th dan)
- Luiz Eduardo jr. Miele (4th dan)
- Michael Lee (4th dan)
- Sami Munukka (4th dan)
- Tom Foucha (4th dan)
- Justin van Doorn (3rd dan) *
- Mustafa Fidanci (3rd dan) *
Trainers
- Richard Frankema (4th dan)
- Marco Tromp (3rd dan)
- Levi Ras (3rd dan)
- Jacob Pasterkamp (3rd dan)
- Helene de Heus (2nd dan)
- Satu Munukka (2nd dan)
- Annemieke Sprey (2nd dan)
- Roland van Boxtel (3rd dan)
- Kim Bosch (2nd dan)
- Henry van Heeswijk (2nd dan)
- Lance McKee (2nd dan)
- Tim Sorensen (2nd dan)
- Lukas Romkes (2nd dan)
- Sander van der Zwaan (2nd dan)
- James Kim (1st dan) *
- Toni Viitaniemi (1st dan) *
- Jukka Teuronen (1st dan) *
- Pedro Campillo Frontera
- Carlos Leal Campon
- David Martinez Hernandez
Note
Persons marked with an asterisk (*) have been given permission by master Ko Baek-yong to teach at this level even though they haven’t got the required dan-rank yet.