Just remember -- toddlers are toddlers and they can get anywhere at anytime. My firstborn managed to get from the cabin to the transom in no seconds flat when he was 2 -- scared me to death. I was playing with him, had some netting on the door, something distracted me for a second, and I turned back to see him literally climbing up the back transom. This was before the C-Dory -- but a similar layout. I thought it was just him. But then, four years later my second born did exactly the same thing.
I'm as hovering a parent as they come, but both found a moment of opportunity -- as toddlers do -- and with only a few feet between the cabin and the water -- well it doesn't take much. After that I literally only let him on the boat when he was tied down (carseat latched in place).
I sold the boat -- and when all three of my boys passed the stage of Houdinism bought the CD.
I know you already do this, but I'll say it to remind everyone including myself: PFDs all the time -- supervision all the time. Don't be lulled into a sense of security that your little one doesn't climb. Mine didn't either -- until they did. Just toddlers being toddles.
That said, there is nothing better than kids on boats. I grew up on boats -- and my kids are growing up on boats (they were 6 & 2 when I sold the last boat -- and 11, 7, & 5 when I got the new boat. It was the 2-4 year old stage that scared me. :crook
Matt