Robin Symes, right, and Young Jei Kim, left, of RNY Golf Institute, the RNY Institute is situated in Incheon, Korea, on the Sky 72 driving range, the largest range in the world.

Robin Symes, right, and Young Jei Kim, left, of RNY Golf Institute, the RNY Institute is situated in Incheon, Korea, on the Sky 72 driving range, the largest range in the world.