Mr. Rush, it was so surreal... I studied Moo Duk Kwan, Tang Soo Do for two and a half years. Myself and a group of first and second degree blackbelts switched to GM Kong's tuteledge. Wow, how our world changed. Due to GM Young Il Kong's fighting technique. Our kicking technique and power advanced, remarkably. Shortly thereafter, GM Kong brought his younger brother over to the US to live and compete. This was Young Bo Kong. Due to GM Young Bo Kong's tournament success, coaching and mentoring. Now, 40 years later I see alot of competitors using the lead leg side kick, sliding lead leg sidekick and many more techniques that GM Young Il Kong introduced to the United States. I can tell you this with impunity, once you train under GM Young Il Kong, no one else will suffice. His fighting technique is impecable. Note: I'm not the first or, the only one to have said. this. Sincerely, ---Glenn Babicky Sr.