In addition to my last post, I have drawn up some simple plans to run an electric motor forwards and reverse using a micro servo to switch two micro switches. I have not tried this plan but in theory it should work.

I am going to build it and use a planetary gear system to turn the winch on the back of my tug boat. I will house the motor, gearing and relay in a water resistant container.

Not sure how successful I will be, but in the interest of making things better, I am willing to give it a go