There’s been a lot of talk about how post-industrial Pittsburgh is “reconnecting with our rivers.” Pittsburgh, it’s often noted, has one of the highest rates of boat ownership in the country. But look at the aquatic parade swirling around the Point some weekend afternoon, and ask yourself: Are we really more connected to the water than we used to be? Or have our rivers just gone from industrial sewer to drag-strip? Yes, it’s recreation you’ll have to work at. But it’s healthier for you, and even for the environment all us pleasure-boaters are trying to discover.