I'd second Garhauer. They're now stock equipment on Catalina and several other brands... They make a 4:1
boom vang with cam
cleat for about $100 and it comes with
line and everything.

The one problem I saw with it was that the pins in the
shackles weren't drilled for seizing wire. On a
boom vang this might not be super critical, but I'm using the one I bought as a back stay adjuster...and it is a bit more critical to have a backstay stay in place.

__________________
Sailingdog
Telstar 28
New England
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
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