Mostly outboard motor guy’s here. I searched “Chris Craft boat transmission repair service “ and this came up. “ For Chris Craft boat transmission repair service, you can turn to specialists like Federal Marine Transmissions, known for rebuilding Paragon and Velvet Drive transmissions. Great Lakes Skipper also offers a wide selection of new and rebuilt boat transmissions, including those for Chris Craft. If you’re looking for parts or information, Chris-Craft-Parts.com may be a helpful resource.”
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.