While most of the Mango cocktail recipes I've seen use light rum, I decided to add a bit more weight to the rum flavours by using a Dark Jamaican Rum. The Pineapple rum flavour is more subtle, but blends well with the mango flavour. Of course the addition of the 150+ Proof Rum float will give this tropical frozen drink a bit of a kick. However, if you are unable to source 150+ Proof Rum, then the Overproof Rum of your choice will suffice as a substitute.