Good idea. I had a rope ladder many years ago on a small sailboat (similar freeboard) and it sucked. Hanging off the winch meant there was still quite a step to get over the top, and, the flexibility of the rope meant that as soon as you put your weight on any of the rungs the thing would push into/under the hull, meaning it was a slightly inverted climb with your toes crammed against the hull.
All that to say I'd never bother with a rope ladder again.