If KA fusi is soo much easier to say than COW fusi, then knock yourself out. I can understand if it was actually a complicated Tongan name, like may others are....but this is as simple of a correction as you will ever get. In that case, why not just get it right? I grew up right next to Hanauma Bay in Hawaii and heard tons of people call it HA NA MA bay...no prob! Even though its officially pronounced HA-NA-UMA bay. But COW vs KA? lol..oh well I guess the message was meant for people who just honestly were unaware, instead of those who simply could care less about even trying.