A discussion of lazyjacks on one of the Columbia email lists prompted Dan Johnson (Seraglio, 1972 Coronado 27 #316) to draw up a copy of his lazyjacks.
1. Harken #233 Micro Cheek Blocks are mounted on each side of the mast, 12 to 24 inches below the spreaders/shroud tangs. Eye straps are mounted under the boom at points 'A', 'B' and 'C', determined by trial as to the best place for the verticals to capture the sail battens. 63 feet of 3/16th inch diameter nylon line is used. Allow some extra line length for the knots tied on line ends. Blocks D & E are Harken #224's.
2. Line E-F starts out about 25' long. A small loop is made at the center point. Each side ends up being about 12' long. Each end is passed through a cheek block and tied off on block E. It has to be long enough to collapse jack system forward to capture under reefing hook or some other fastener to fit under the sail cover when on.
3. One end of line F-G is tied to the E-F center loop and used to raise and lower jack system. Line F-G is about 15' long-long enough to tie off when jack system is collapsed, longer if to be cockpit led.
4. One end of line D-E-C is tied off on block D on one side, run through block E on same side, down under boom through eye strap C, back up through block E on other side, and tied off on block D on other side. Line D-E-C is about 66 inches on each side, 11 feet overall.
5. One end of line A-D-B is tied off on eye strap A on one side, run through block D on same side, down under boom through eye strap B, back up through block D on other side, and tied off on eye strap A on other side. Line A-D-B is about 72 inches on each side, 12 feet overall.