Spreaders
Spreaders artifically increase the angle of the shroud at the top of the mast by creating a fulcrum. Picture in your mind what the angle of the shroud to the top of the mast would be without the spreader. It would be very shallow and not very effective.The spreader should be perpendicular to the mast and shouldn't move up or down. Be sure to install boots.To stop the main from laying against the spreaders on a run, use a boom vang.Russ