Any other guys in the family should attend trade school or college. It's not worth the risk to race. I don't know much about the Dunlops but they didn't get popular not being good at racing and this still happened.
This is why I don't talk about my time at the IOM TT a couple years ago. People that don't know me will feel some need to pass judgement.
I'll just say I met William, and his brother Michael. And I was a fan of their father, and their uncle. They all know/knew the risks, as does everyone else that tries their hand at real Roadracing.
I'm at a race this weekend, too. Although not a Motorcycle, and I'm not driving/riding. Just being in the vicinity of these machines is dangerous, and potentially life threatening. I don't need to do it, but I enjoy it, and will continue to do so despite the risk until I decide not too, or my services are no longer needed.