Has anyone here trained under him? What is he like?
Miles said:I've been to three seminars with GM Sell.
GM Sell is a very traditional instructor. He and his lovely wife are very talented and enthusiastic when they teach. In my (albeit limited) experience, GM Sell taught basics and combinations, GM Brenda Sell taught poomsae. They were both pretty patient when going over material and wanted the students to "get it."
They are both ordained ministers and even in their TKD presentations, there is a certain amount of religion which comes through. As long as you are okay with that, you will have no problems with the material being taught.
Hope this helps!
Miles