HTTYD : what if gruffnut was Thrown Overboard when he was eight?

what if, when he was eight, he was thrown overboard from the ship he was on? what if it was because of an enemy? what if, somehow gruffnut survived thanks to a dragon? what if no one in the family found him? what if gruffnut finds about four pieces of the dragons eye lenses? what if guffnut has a lot of overprotective dragons? what if gruffnut was a dragon rider too?

(everything will most likely be different...like personality...)