Master Frank Schermerhorn, Sa Bom Nim, Dan #19787
Frank Schermerhorn entered the Moo Duk Kwan discipline in September 1972 at the age of eighteen, at the University of Scranton under Mr. Joseph Margitich. He rose to distinction early and was passed 3 belt levels in his first test, becoming a green belt in 3 months. By 1974, he was teaching Tang Soo Do at the University and was president of the school's Karate Club. Later that year, his instructor sent him to Susquehanna County to open a branch of the Upper Valley Tang Soo Do School in Hallstead, PA. The studio moved to Susquehanna, PA in 1977. (Winding River name comes from the Iroquois word, "Susquehanna.")

In 1983 Master Margitich passed away, leaving Mr. Schermerhorn as his senior active student. Continuing with the lineage of his instructor's instructor, Mr. Schermerhorn requested and was accepted as a student of Grandmaster H.C. Hwang (son of Grandmaster Hwang Kee). Subsequently, Master Schermerhorn was promoted to Master Instructor and opened a full-time studio in Binghamton in 1986. Now an 8th Dan, he has been a member of the Technical Advisory Committee since his original appointment by Grandmaster Hwang Kee in 1998. He has taught clinics across the US, Belgium, Korea, Mexico, Australia, and in the United Kingdom. He served on the Board of Directors of the U.S. Soo Bahk Do Moo Duk Kwan Fed., Inc. for 13 years. Sa Bom Nim F. Schermerhorn has recommended over 220 students for Dan rankings and has been the instructor of 8 other certified Masters.



Master Sandra Schermerhorn, Sa Bom Nim (Master Instructor)
Sandra Schermerhorn began training in 1979 one month after her two sons, Matthew and Jeremy Wolfer, began Soo Bahk Do training. She is a 4th Dan and certified Master instructor having tested in the year 2000 in Carbondale CO at the US Soo Bahk Do Moo Duk Kwan Fed. Inc., a 9-day Masterís test. She has served as the Board Director for Region 2 of the Federation, representing practitioners who live in the states of NY, PA, MD, DE, NJ, and Washington, D.C. Mrs. Schermerhorn Sa Bom Nim is the creator of the Winding River Karate Self Defense program which has been presented around the Northeast to union groups, womenís groups, senior citizens, and children. Mrs. Schermerhorn has taught numerous outreach programs teaching children.



Master John Endress, Kyo Sa Nim (Intermediate Instructor)
John Endress started out as a parent who brought his children to Winding River Karate. He started his own training in 2001. He started assisting in classes in 2004. He has directed Soo Bahk Do programs at Woodrow Wilson Elementary School and the Boys and Girls Club in Endicott.



Gary Crimmins (Training Instructor)
Gary Crimmins was born in Binghamton in 1940. He graduated from St. Patrick's Academy in 1958, joining the Army spending 8 years as a radar operator in a Surface to Air missile site.While in Chicago, he took up his martial arts training. After eight years in the army, he resumed his training and earned his first Cho Dan in the Japanese system. He then walked into Winding River and trained with Master Schermerhorn (how many years ago) to earn his third degree midnight blue belt.



Heidi Vanvorce, Kyo Sa Nim (Intermediate Instructor)
Mrs. Vanvorce began training with Sandra Schermerhorn in Conklin to improve her physical well-being in the mid 1990s alongside her daughter, who trained with Master Schermerhorn. She soon became a member of the award winning Senior Hyng Dan Team. Today, she has achieved the rank of Sam Dan (3rd degree midnight blue) and instructs at Winding River as a Kyo Sa (Certified Instructor).



Jesse LaPadula (Training Instructor)
Jesse LaPadula began studying Soo Bahk Do in 1999 (at 5 years old!) He is currently training for the rank of Ko Dan Ja (Master Level) while instructing and is serving as Winding Riverís Program Director.

Ray Rupert (Training Instructor)
Ray Rupert began training in Tang Soo Do in 2003 to train with his son, Tim, who was a red belt at the time. Ray became a student of Soo Bahk Do and Sa Bom Nim Schermerhorn in 2012, once again following his son who had come to Winding River the previous year. In April of 2013 Ray tested for and achieved the rank of Sam Dan in the Moo Duk Kwan and earned Dan Bon 45128.

Kate Harvey, Jo Kyo Nim (Junior Instructor)
Kate Harvey began training in Soo Bahk Do in 2007 at Kwon's Karate in New Hampton, NY. Since then, she has trained at 7 different Soo Bahk Do Moo Duk Kwan schools as she moved for her job. Now settled in Bradford County, PA, she has achieved her E Dan rank promotion and Jo Kyo certification under Sa Bom Nim Schermerhorn's instruction.

Tom Holden, Jo Kyo Nim (Junior Instructor)
Tom Holden has been teaching at both Brookside Elementary and Winding River Karate for several years. He is also an instructor in our applied division of classes designed for the realistic usage of both basic and advanced techniques.