An interesting article at Wired Online notes that wave heights, especially in the middle latitudes, are increasing by seven centimetres a year and scientists are unsure why: http://blog.wired.com/wiredscience/2008/12/waveheight.html
Jacques, don't believe all you read. Thailand is GREAT and the cruising grounds are so uncrowded and friendly, fromKo Chang in the east to the Andaman Sea in the West.
The Jordan drogue is, i think, very good for multhulls, PROVIDING you have very strong anchor points for the bridle and a strong winch to retrieve it.