An alternative to a bow thruster when reversing out of your marina berth in order to turn your boat and to prevent an accidental collision with a boat on the opposite side is the use of a slip rope secured onboard your boat near the stern and on the side to which you want the stern to turn towards. It needs to be long enough to allow your boat to reverse to a point where when the bow starts to turn you will miss the boat berthed next to you or the end of the finger pier, but not so long that it would allow you to go right across the waterway to collide with a boat opposite. It also needs to be long enough for you to have both ends of the rope onboard while leaving the middle of the rope to pass freely around but not be secured to a cleat onshore. Reverse out gently, and as the rope tightens it will cause your boat to start to tun. Once the turn has progressed far enough, put the prop out of gear, let go one end of the slip rope and pull it in fast. The action of pulling the slip rope in from the cockpit on an aft cockpit boat will also help to turn your boat. Once the line is onboard put the engine ahead and rudder over to steady the turn, and that’s it, job done, but you do need to practice the manoeuvre somewhere where the berths are empty. Also ensure that there are no knots in the end of the slip rope that might otherwise cause it to jam up and give smart ass onlookers something to shout about.