The shackles I have have the holes drilled.

AN (Army /Navy specification US) bolts don't rust and are coated for anti corrosion. Am not sure of their shear strength compared to stainless though.

The shroud base has a plastic sleeve that fits over it so that would preclude cutting myself on my boat. However in other areas the wire would have to be covered with something.

Any ideas on re-raising the mast?