Some might know this already, but here is how to get KMZ from Reefmaster to work in the Google Earth app on IOS (Iphone/ IPad).
Use "Export map in preset style":
Use "Google Earth map with shaded relief":
Screenshot of the map in Google Earth on IPhone 7:
You can not use "Google Earth vector map", and you can not use the KMZ-export under "Export map".
Matt - a Q for you: How come this version of KMZ-export works for IOS, but not the others? Something must be different.