Because of the curved approach into Hong Kong, ie no straight in ILS, you had to fly the IGS. This was the same as an ILS but pointed you towards a big hill. The required visual reference was the checkerboaord. Once seen you converted to a visual approach. Put the wingtip on the football field and look right! The running rabbit was curved around to give you a run in to the threshold. You could walk up to the checkerboard and watch the aircraft making the approach. A bit sad but good fun!