Selden Single Line Reefing System

The Selden diagram was a little confusing, so I created my own with Visio. The picture is of the Selden single line reefing block. One end is eye spliced, and goes towards the luff reefing grommet. The other end is a block with a line through it. One end of the line goes through the leech reefing grommet, and gets looped around the boom with a bowline and a loop. The other end goes to the mast base or cockpit, where you set the reef. Pulling on the reefing line pulls the luff and leach down at the same time, therefore reducing sail area (reefing).