Just noticed the link was cracked on this - here is Harken's photo, and the link to the tech page for these blocks.
[Linked Image]

http://www.harken.com/blocks/hobiewave.php

You can order these blocks through the Catsailor on-line store! <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />

John Williams

- The harder you practice, the luckier you get -
Gary Player, pro golfer

After watching Lionel Messi play, I realize I need to sail harder.