English for Climbers
We might choose a day and a craig and offer free "climbing English" lessons for Korean climbers who want to travel, brush up, or learn some new expressions-- maybe to read websites or articles. Many of us are teachers, anyway. We could pick a crag and publicize it on the Korean websites and at our gym and word of mouth.
Or it could be a language exchange and we could make it like a Korea-English 만나서 인사.
"If you can't do something well, you might as well learn to enjoy doing it poorly."
-- from a de-motivational poster, but I find it oddly liberating