We have a 9-month old and we're doing fine with it. We have a pack 'n play bungeed in the cabin where we can put our kiddo for naps, or if we need to do something with the boat. Our tolerances for bad weather, cold or hot temperatures are not what they used to be, but we're still having fun with it. Catalina 30 will be a great boat for kids. We used to have a 25 footer, and we knew that boat wouldn't work with small kids for where we sail (gusty, very choppy).
Catalina 350 "Golden Handcuffs" sailing out of Galveston Bay, TX