Originally Posted by Sailnteacher77
Considering an autohelm 4000 for a 43ft 23K lb sloop rig.
I have more than 10 seasons use on a 4000ST. Our boat is 38'6" and 15,000 disp. I've been surprised by how well it has steered the boat, most of the time in those 10 years.
It's done 95% of the steering in several Gulf of Maine overnights, much of that time under sail. It has no problem with wind forward the beam. I can adjust course, sail trim on our yawl off the wind, to have it do all the steering.
It get's tricky downwind with a good breeze and following seas, but so far, I've found a way for it to do the hard work on overnights, even downwind.
I'm nice to it(the WP, it's plastic) and make sail/coourse changes when it's working hard. I don't want to hold the wheel all night.
As coastal sailors, I'll happily get the newest version WP when this gives up(I'm on the second belt), knowing it'll do what we need without the expense and complication of an under deck AP.
I think you're use will depend on how well you can maintain an easy helm on your boat.