I don’t know if this helps
http://news.tygem.com/news/news/viewpage.asp?pagec=32&seq=7338&gubun=4&igubun=&find=&findword=
“Volunteers who are said to have served as sign language interpreters for the first Go tournament. After the contest, when asked “How do I explain the Go term”, he said that there is no special sign language method, and that he uses Jihwa, which expresses handwriting by hand.”
It’s google translate, though, and I’m not good enough in Korean to help out.