I think Mary's about covered it.

I should say that the baby isn't ours. She was ONE year old that weekend. She and her parents came to visit from the wilds of Saskatchewan, so everyone were pretty lubberly. Both Mom and Dad were on the boat, and they took turns watching her, staying real close. In fact, Mama is holding up the sarong shade. Bebe didn't like the heat too much, and she REALLY hated the lifejacket, but the water was all good, and overall she had a great time.

I can't reiterate Mary's advice too many times. Teach your wife how to sail. For the trust and safety reasons, and also so y'all will be able to switch out watching the kid...