Does anybody know how to code a ship that sails with the sail and not the seat?

I'm struggling to find out how to code a ship like one on Tradelands or The Turbulent Seas. I used to have it to where you drove it from the seat, but would like to make it to where it is driven by a sail, and you can walk around while it is sailing. Therefore the wheel is how you steer. I already have the proximity prompt set up so you can raise / lower the sails. I'm using the part transparency to see if the sail is raised / lowered, anybody know of anyway to script this?