Aries Wind Vane on a Catamaran?

[philipmclaren1]

I'm researching fitting a Wind Vane self steering system on my Heavenly Twins Catamaran.
I've read the pros and cons but I'm interested in getting some feedback from someone who has actually done this to their Catamaran or who has sailed on one with this system onboard.
I'm looking at the Aries System which has a Pendulum Servo Rudder which would be attached to a wheel drum on the wheel rather than the tiller.
I'm thinking of positioning it on the port stern rather than centre.
Any feedback would be appreciated.

[robert sailor]

I've had lots of experience with wind vanes but not on Cats. That said, if your Cat is on the performance side then a vane is not that practical as it operates and steers to the apparent wind. When your Cat accelerates quickly the apparent wind moves forward and the vane tries to follow the original setting which simply doesn't work well. The fast monos have the same issues with windvanes. If you are sailing one of the condo cats which are lower performance you might be happy with the results but best to check with others that have maybe used one on a similar boat to yours.

[Meandercp]

I have a Autohelm mechanical wind vane on my Dean 365 catamaran. The vane controls an auxiliary rudder instead of being a servo pendulum type. I moved it from my monohull and it works well, although not quite as effectively as on the monohull. I use it all the time on crossings. It even works down wind when there is wind.

I originally tried to install it on one hull, but could not support it structurally so I installed it in the middle between the hulls.