One of the focal points of Doha is the Corniche, a 5km long curved bay, running from the new Museum of Islamic Art round past lots of high-rise buildings to by the Sheraton. It has some stunning views across, as you walk round, like this:
In many cities with a waterscape like this, there are cheap-ish ways to cruise across and see it from the water. Sometimes it'll be a water taxi, sometimes a water bus, sometimes a short boat trip.
However, the wikivoyage page doesn't seem to mention anything about that in Doha, and I didn't spot any today when I was walking along the Corniche.
Are there any cheap ways to see the Corniche and bay from the water? Or is the only option to just walk round? (Walking round does have nice views!)