tiller....We did a champagne catamaran excursion through Princess two years ago and loved it. It was a 6 hour trip. 2 hour sail to Honeymoon Beach at St. John, 2 hours at the beach and lunch, and then a 2 hour sail back.
It was a beautiful day and we had a fantastic time....I would do it over again in a flash! The excursion was done through Bolongo Bay Resorts (I think that was their name), they did an excellant job.
If you go, enjoy!!!