I've done Pontcysyllte by narrowboat, but the first time I crossed it was with a 2-man canoe. As it was January, the canal was frozen over, so we had to carry it on our shoulders as we teetered along the icy towpath, between a 100ft drop and a trough of icy water.

You may think that was scary, but the Sergeant was much scarier, so we just got on with it. And lived to tell the tale. Many, many times.