Got somewhat of an odd question but I was looking over the Multiengine Instructor PTS and it seems like you have to do ground ref (turns around a point, s-turns on a road, etc) if it's you're initial CFI or initial Airplane CFI. I currently have a CFI Helicopter (RH in the PTS matrix thing). I've never head of anyone doing ground ref in a multiengine airplane (never did it for my multi private add on or my multi commercial initial). I was looking at doing my MEI at ATP as an add on to my CFI Helicopter and am curious if anyone has ever heard or done ground ref in a multi... Thanks