- Rank: Yuk Dan (6th Dan)
- Dan Bon: 34126
Derek Koina Sa Bom Nim started training with Glenn Sa Bom Nim in February 1988 at the age of 14. Once started he really enjoyed himself, attending his first training camp as a 10th Gup and his first snow training as a 9th Gup. Derek can count on one hand the missed camps and snow training sessions since then.
Derek graded to Cho Dan on the 26th September 1992, with four other members in Canberra. He has been instructing since a little before then, starting with Introductory Courses for prospective students and instructing selected classes.
On November 26th 1994 Derek graded to Ee Dan with the same four members who tested to Cho Dan with him, and in 1996 he sat the instructors Exam under Glenn Sa Bom Nim.
Derek opened the doors to his Do Jang (School) in February 2001, “Gungahlin Soo Bahk Do”, and now has a group of enthusiastic students who he teaches during the week and regularly trains with Glenn Sa Bom Nim. Derek has been asked to assist with some of the seminars and takes an active role in the Australian Soo Bahk Do Moo Duk Kwan Federation, as well as Region 3.
In October 2001 Derek went to Japan with Glenn Sa Bom Nim to train with various traditional Japanese Martial Arts including Kendo, Kyudo, Yari and to experience their living culture in context by living with a family for a while. He also attended the South East Asia Leadership Seminar in Darwin 2002, where he tested for Sam Dan in the pressence of Kwan Jang Nim H.C. Hwang.
In September 2005 Derek Koina attended the Korea Ko Dan Ja Shim Sa, where he successfully passed his Sa (4th) Dan and Sa Bom (Instructor Exams). The Ko Dan Ja is a week long examination required for Sa Dan and above, it is presided over by Kwan Jang Nim (the head of World Moo Duk Kwan).
In November 2010 Derek Koina attended the US Ko Dan Ja Shim Sa, where he successfully passed his O (5th) Dan exam.
In 2014 Derek Koina attended the US Ko Dan Ja Shim Sa as a guest strengthening connections with Kwan Jang Nim. The following year attended the Korean Ko Dan Ja Shim Sa as a Guest and the 70th anniversary connecting with Masters from all over the world. The following year, October 2016, Derek Koina attended the Korea Ko Dan Ja Shim Sa as a candidate for Yuk (6th) Dan.
In the future Derek would like to see Soo Bahk Do continue to grow and experience more overseas travel and international training. He is working towards establishing a full time school in Gungahlin.