Dick "Gockan" surely wouldn't upset Dick if announced by (say)an Anglo M.C. That's probably the best we Anglo's can do.
It's a bit like everyones British /American (and other English tongues) of pronouncing version of Van Gogh - we all have a version which we think is somewhere near. I don't think Dick would get bent out of shape to hear Gockan. He's far above all that. Fabulous fella and performer.