Yeah, there ought to be some kind of attachment point for the tack of the sail. Usually some sort of U shaped fitting with a quick pin through it. If you go to the Dwyer website you can see examples. And the clew should be attached to an outhaul of some sort--usually a block fixed at the end of the boom that directs the outhaul line to a jam cleat a foot to two forward on the side of the boom. The loop you mention is, as you say, for a downhaul. Dwyer also carries organizer plates that mount under the tabernacle. Nice thing to have. You'll need some cheek blocks or some such device to turn the halyards back toward the cockpit. I don't think you're reading the number right. 601 would be a more recent vintage than your 75. t -- Tom & Jane M17 dharma bum