John, the 37+ has a baby stay in front of the mast that a metal shackle or a knot sometimes gets caught on. Soft shackles work great. Your 1/2 inch sheet is good for about 10,000#. 1/4 inch dyneema core made into a soft shackle about 12,000# Give or take plenty strong enough. You do need loops in the sheets to make it work. Like others had said easy to make. Before I bought a fid set I used a bic pen as a fid and made a dozen while watching a hockey game. Len Mitchell Crazy Legs 1989 37+ Midland On.
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