I play Orks. And when you play Orks you table Boyz. They're the core of any good Ork army. And you don't just have a few. You bring a mob or two to the table. It's how Orks roll.
So here's a brief video on Ork Boyz tactics. And I totally agree with the Rokkit Boy assessment. I have never actually rolled a hit, let alone a wound with a Rokkit Boy.