Why not teach tourists how to snorkel?   Yogic breathing, be calm, don't venture too far, respect the waves and the currents. I'm not an adventurous swimmer, but I've rarely had a problem on the Big Island Hilo Side, because I am careful.  I'm also a scuba diver, and rarely take chances. These statistics are making me think we need some education campaigns.  I know that Hawaiian waters can be rough, but also so beautiful if people honor their limits.