This is how my three-year-old goes swimming at a friend's house. She wears a floating vest, arm bands, an inner tube and goggles.
The good part is I don't actually have to be in the pool the whole time with her which is a nice change from last year. I now get to play lifeguard and sit by the pool while I drink pink lemonade. She gets tons of exercise because she isn't hanging onto mommy. The best part, for me, is bedtime is a dream.
Ahhhhhh - if only every bedtime could be as easy as one after a day swimming with friends.