Not to get ot, but I started taken my Son out when he was 9, he's been at it ever since. IMHO, it's a Dad's job to introduce his kids to as many activities as possible, so kids can find something they 1..enjoy and 2 are somewhat good at to keep their intrest going.
BTW...Dad's will always out fish their kids, at least in my case..lol
Keep at it, he just got Lucky..