Recommendations given are for mast length and IMCS stiffness. All sails are designed to fit a 'Constant Curve' flex pattern. Due to wing-loading considerations, softer masts are suitable for lighter sailors whereas heavier sailors over 185 pounds may prefer a stiffer mast. Before use, camber stabilizers and related battens should be adjusted for an RDM mast. Min Rigged Luff Lengths Minimum Rigged Luff lengths are from the top of the sail to the top of the downhaul rollers on the mast base when properly rigged.
Lengths given are approximate.
Study the effect of downhaul adjustment on the shape and tension distribution throughout the sail. Some sailors may prefer to use a downhaul tool or other rigging aid to achieve correct downhaul tension. The optimal sailing length depends on mast selection, wind strength, sailing angle and sailor height and weight. Take the time to experiment on the water. Outhaul has a direct effect on the power and handling of your sail.