Have a 1984 Cal24-2. (#46) Came with traveller on stern that connects to two blocks on the boom, then down to a block/cam mounted on center of the cabin sole. I don't use this set-up. Instead have a traveller mounted across cockpit just forward of lazerettes with a 4-part leading up to the center-boom attachment. Have control lines to adjust taveller athwartships. --fswyc