wind vanes, self steering devices
I helped my friend install the Monitor on his J35 for use in the Bermuda 1-2 this year. If you''re mechanically inclined and have help you can do this in a day. We loved it right from the start. There was a short learning curve and I was disappointed in the light wind performance (personally), but overall we loved it. Be aware it uses the apparent wind when you doze off. If you really want to be sold on the monitor send for their video.