Nice Knothead. People are people and if one of us had a brother who liked to drive boats fast at events for gofast boats and was killed we would sure feel crappy. Unless there was another article posted I don't think any of us know the details beyond the fact of the boats being capable of dangerous speeds.
Lets also remember that there is no shortage of sailors who are dangerous to themselves and others.
Incidentally sailingdog, boats travelling at 60 knots plus generally don't make nearly the wake that they would while "in the hole" just before planing speed. They have so little hull in the water that they just don't move that much of it.