K.S.
When my daughter was 3 we did do the sink and swim it was kinda traumatic for her. It did save her though cause she did learn to swim to the side of the pool. I think if I could do it again though I'd have just taken her to the YMCA. I watched the kiddie class while my daughter was practicing for the pre swim team class and they really seemed to make it enjoyable for the kid as well.