not nearly as much as the Spirit or 18 Sundowner, but still 40 hours or so on open water like Lake Ontario and Long Lake. It handles lake swells well,.turns easily, and was dry with 360 # of paddlers and no load.I would have preferred bucket seats and a foot brace over the bench seats. The smooth floor of the Ultra-Light layup does not provide a place to brace your feet like a cross rib layup. I have a 17 Jensen set up with sliding bucket seats and a rear foot brace and have paddled and raced it in very challenging conditions on big Adirondack lakes without problem and credit being solidly anchored in the seat to maintaining control. And the Adirondack is more seaworthy than the 17 Jensen.