Seems to be the only way you would have a chance at that would be to launch from another vessel or nearby land. Something you control and can stabilize for your retrieval. And that has room for you to take off and land without worrying about rigging.Hum, I got a neighbor that ask if I could capture him and his family on their sail boat. I said I'm comfortable with that. Then one day I realized he would probably want to be sailing, not just putting around with motor. Now with this thread, thinking of compass problems, and adding wind, and dodging sails. Guess it would need to be calm day, sails up for show. Starting to sound scary, I'm really not a very good swimmer, and I have never been on a sail boat.
Rod