Only problem with ID'ing the boats was during the '50s, a LOT of small boat companies were started. In fact, a large majority of the riveted boat companies we have today were started back then. After the war, much of the equipment needed to build riveted aircraft was no longer needed. Couple that with the recreational boom, and suddenly a boat company sprouted on every corner. Many of these quickly went bankrupt, only after making a few boats, so records are nonexistent, and only a handful of boats like them were made, so the chances of happening upon one that hasn't been scrapped yet, and who's owners still know the story behind it is like finding a needle in a hayfield. Also, many people built their own boats, and there would be no way to say that it was "hand made," because these were people that had previously been employed by aircraft manufactures, and still had the know how, and access to the equipment. The construction techniques behind both riveted boats and riveted aircraft (at least those of the WWII era) are just about identical, hence why riveted boats suddenly became the rage - it was the piece of recreational equipment best suited for a former aircraft builder.
I am not going to say you aren't going to find the origin behind this boat, because weird things do happen, and sometimes some old timer who happened to have seen or owned one of these things will happen to meet you, or come by this post online, but I will say don't expect it. The chances of such happening are so slim it isn't even funny.