That sounds like a plan Jim
Rudy Nickerson used to work for O'Day in Fall River, and bought all the molds and stock from them when they went out of business. He's located in Assonet Ma., and works out of his barn next to his house. He should have what you need to do the job. It's a pretty easy job and involves getting the line up through the keel slot and into the cabin. Then, all your diver has to do is attach the centerboard shackle to the centerboard. There's a small hole in the trailing edge of your centerboard where the shackle pin goes through, and the cotter pin holds it on. If there is nothing to attach the new pendant line to, I don't see why you can't use an electrician's fishing wire from the cabin and attach a strong pulling twin to it under the keel. He could attach the end of the pendant line to the twine. Put a long twine on it, and you can attach it while sitting in the cockpit. When I did mine, I bought the line and shackle off Rudy and made my own braid splice to the shackle. Then I used whipping twine to whip the end of the pendant line. I used one of my large sail needles along with the leather palm and pushed the needle through the braid in back of the whipping and tied a small bowline through the braid from the pulling twine to get it up through. Good luck!Joe