I'd think twice about replacing the
bronze tube with rubber hose. I was tempted to do the same thing on my Person Wanderer but decided to renew the tube with bronze. If you replace the tube with rubber hose, if any section of the hose below the water line touches the wire cable during operation, the cable will cut into the rubber. Since the rubber hose would hide the wire, there is no way to insure that the cable was perfectly centered within the hose. If you do use rubber and the cable does start sawing into the hose, it is just a matter of time before you develop a leak that has the potential of sinking your boat.