Hi, I teach tennis in a town in The Netherlands. I`m one of two teaching professionals in my club. We have a group of 12 children in the age of 12-16 years, beginners. I personally think we have to learn them the serve with the continental grip right from the beginning, but the other pro thinks we should learn the serving with a eastern fh grip first, and change later. What would you guys think? And what about younger children?