I installed an Aries
Servo Pendulum wind
vane on my boat two years ago and crossed the Pacific last year with just me and my girlfriend from California
. I have a wheel on my boat and I am two and a half turns from lock to lock. I have a feeling that a servo pendulum wind
vane mightn't be the most effective system for you.
If I was in your position I would have a look at a Hydrovane.
We met a lot of people who were cruising with them. And every person I spoke to was really happy with theirs.
They can also double as an electric
auto-pilot by attaching a tiller pilot to them. I've seen it done and was pretty impressed at having that as a redundancy.
I'm sure plenty of other people on the forum will have more to say on the matter.
Looking forward to seeing what you decide to go with.
Good luck on your upcoming trip through the Pacific. I'm jealous!