Learn Sailing safety from
http://www.ussailing.org/safety/

before you do any sailing in Hawaii

Forty items of safety gear and many maneuvers were tested in conditions ranging from 36 knots and a three-foot choppy sea, down to a moderate wind and smooth water.  Almost 200 hours of trials were held on a wide range of 15 boats ranging from 21 to 53 feet in length - seven keel cruisers, a keel racer, a catamaran, three trimarans, and three powerboats.  This was the first crew overboard rescue trial involving a fleet so big and so representative of American cruising boats.  Some of the tests attempted to recover an unconscious victim