[quote=turbohobo][quote]So the "through the mast" halyard is generally not done because it compromises sealing the mast[/quote]
Roger that, the mast essentially should be so water-tight that it becomes your "float". The mast head is a sheave or pulley through which the halyard runs on the outside of the mast, do as Prindle Pete suggests, remove mast head, mast base, check inside of mast for corrosion, superfluous items that don't need to be in there, apply silicone liberally, re-rivit, seal rivits, and check everything else attached to mast such as mast tang, halyard hook, etc, etc. Then take the mast out to a large body of water and see if it floats.[/quote]
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