I am a Taekwondo instructor. Three years ago, while training in the backyard with at that time an acquaintance, we went inside to my home dojang where I have a rather extensive martial arts library. My friend was looking through my library when he spotted a Hapkido book I'd had since 1996 and said of the author, "He was my Grand Master." Since then, I've taken small group classes in Hapkido with my friend/Master and hope to test for my Hapkido black belt later this year. I've changed my Taekwondo curriculum to include some of the basic Hapkido techniques (defense against same side wrist grab, cross-wrist grabs, two hands grabbing 1 hand, two hands grabbing two hands, etc.). I find Hapkido is very complimentary to Taekwondo. I am thoroughly enjoying the Hapkido experience but it is a side art for me. Is it your main martial art?