I worked on the boat over two winters, few hours here and there. Everything goes fairly quickly until the fiberglas stage. At that point you can only sand and re-coat then wait until the next day etc. The total time spent on the boat was maybe 250-300 hours including trailer, materials list was a little different from spec on the original plans since I used hardwoods for the seats and lid covers for storage. Originally the plans called for the boat to weigh in at slightly over 200 pounds I believe, but with the changes and extra wood used, it might tip the scale at 275 pounds now, I have flipped it over with 3 guys although it wasn't something I would want to do on a regular basis.
I use my boat on rivers like the Kitimat, Morice and Bulkley. The boat rows like a dream, and gets me on fish safely and is very stable for a rower and two friends, however if backtrolling plugs I prefer just one buddy with me, easier on my arms and lets me really wrk the boat down through runs. As far as flatwaterthe boat will do well as long as there is not a lot of wind. There has been a few times on the Kitimats lower end where it flattens out and the wind has picked up and I have found myself having to row the boat down river. There is usually a modification in the plans that gives you the option of high-side or a lo-side boat, lo-sided boats have less trouble dealing with wind where as high-sided boats can usually pack more weight.
All said, I would build another in a heart beat and have plans to. It is a lot of fun and when you are able to do the little changes to the plans to personalize the boat, it makes those trips that much sweeter. :beerchug: