Ducky tours is a fun experience, but left me wanting more. It is neat way to see the city of Pittsburgh and the tour operators make it entertaining for you (at least mine did). The problem was you really didn't get too see as much of the city as I would have liked on both the land and water.
As you know, the bus turns into a boat and you are able to go out in the water. Unfortunately you are moving so slow you really don't get to see much and don't get to go down by PNC Park. I also felt like there was a lot of the actual city that we never got to see on the bus tour.
All in all, not a bad tour, just not a great way to actually see the city of Pittsburgh.