I’ve been advised to install a zinc on the prop shaft strut of my 1993 Hunter Legend 35.5. Haulout is next week for a bottom paint, so it’s time if I’m to do it. Had anyone drilled their strut to attach a zinc? Any recommendations or best practices? Our strut seems fairly slender, so I’m a bit wary of compromising it structurally by putting a hole in it, but maybe it’s the lesser of two evils.