Check and see if there is an pad eye on the opposite (port)side of the block. If so it would be my guess that you would start the line at the eye and run it up to the first reef clew and back down to the block and run it forward to the cleat. You'll need to create the same arrangement for the second clew. To determine the location for the eye and block, bring the main down to the boom where the second reef clew touchs the boom. Mark the location and install your eye and block an inch or so aft of that mark. This will allow you to tension up the foot when you reef. I suggest installing the eye and block opposite of the way the first reef eye/block is installed. In other words, if the first reef line block is on the starboard side (which it looks like) then install the block for the second reef on the port side. JOe SeaFrog M17 651 ----- Original Message ----- From: Keith Diehl To: Montgomery Boats List Sent: Saturday, May 26, 2012 3:25 PM Subject: M_Boats: Fw: Help Please!! Forwarded without png attachment From: "Jeffrey Johnston" <frjeff@gmail.com> To: <montgomery_boats@mailman.xmission.com> Sent: Saturday, May 26, 2012 11:22 AM Subject: Help Please!! It has obviously been way too many years since I've sailed as I have forgotten more than I know at present.[?] In checking my new main for fit, I am confused by the line you can see (in the pic link below) running along the side of the boom. I am thinking that it may be a reefing line that would run up to the reefing grommet. If so, how can I mod for my new main which I had made with double reefing points. If not for reefing, what might it be? http://www.flickr.com/photos/frjeff/7274181654/ Many thanks *Jeff+* Molōn labe!