The seven year old was actually able to paddle the 16' canoe with the four of us in it - all I had to do was sit in the back and steer. I thought "I'm onto something here" - it's time to get proper kids paddles.
Have you ever tried to buy a kids canoe paddle? they're about £30! nearly as much as proper full size ones!
I found a couple on ebay. They were Collect in Person from England, but I stuck in a fiver anyway to see what they went for.
I won.
Oops, Now I had to find a way of getting them picked up.
Eventually DHL agreed to do it for £13, and they arrived a few days later.
total cost - £18 for two hand made paddles. They weren't exactly Grey Owl, but they look great and the kids love them.
There's obviously demand - everybody we met was asking where they came from.