I met up with an old friend from university after work today. Until very recently, we hadn't spoken to each other in years but it turns out that we have children of similar ages and with similar interests. We decided that a paddle on the canal in double boats would be a good idea.
We paddled from Walton Park to Dunham and back:
This paddle should take an hour and a half or less. We took over two and a half hours - the kids were playing around, picking blackberries and generally having fun. It was a good evening.
We used a pair of Perception Horizon double touring boats. These are big and stable but relatively quick. My three year old was wearing a life jacket and the two five year olds used buoyancy aids.