It’s hard to build technology to combat poor judgment — especially in sports. In any sport there is a risk. Motorcycling is an example. The fatality rate in that sport absolutely dwarfs that of boating in terms of sheer numbers — more than 4,500 fatalities in 2009 — and the death rate per 100,000 participants is excruciatingly higher. Yet, mandatory helmet laws have been passed, and repealed in many states on both libertarian and statistical rationale. Even bicycling posted 716 fatalities in 2008, a number steady since 1998. You could argue that there are more bicycles than boats and so that number is proportionally low, but in truth, bikes carry one person — boats carry up to dozens. With 12 million registered boats carrying the National Marine Manufacturers Association’s estimate of almost 70 million participants, you have a fatality rate of 0.0001 percent. The only way you could be safer is to stay home.