I've never built one from the ground up, but referb'd a few.
I re-did an old galvanized row boat with wood gunnels, steel ribs, wood transom and seats...that sucker was heavy but it rowed fast and tracked super well with a 5 inch wooden keel. It was an old resort boat from a small resort at Pierre Lake up north in Stevens County - I think I gave 25 bucks for it. got a lot of fishing out of it in Pierre Lake once I rebuilt it. Some of the old timers up there used to get a kick out of seeing that old resort boat rowing around the lake again. It was a father/son project I'll remember forever - wish I had pictures. Dad wasn't really for doing a build on it but I was determined so he helped out, I was too young to drive yet.
A joy to row over these newer alum row boats for sure. We had fun though, great way for a youth to spend time (when not lifting hay)