Ignore those co-ordinates. I got it wrong. That's Memul-do. The place those people went to is Maemul-do, they translated it wrong. It's a lot nearer Busan.
It's actually on Geoje-do - www.geojedo.go.kr
- which is a 50 minute, 20,000won catamaran ride from Busan. But the rocks are on the other side of the island and I'm not sure how you'd get over there, it's about a 45 minute drive.
I was down there last Autumn and I noticed this place, HaeGeumGang, but didn't get close enough to check it out, because I was with some girls and it was windy and they wouldn't take the boat. But from a distance you could tell there was loads of lines. I don't know if it would be overhanging enough for DWS, but check out these pics, listen to the music and I challenge you not to be moved:
more pics here: