Just picked up this little gem. It has no ID plate or hull number, but looks similar to an older Gheenoe. 13' long. The registration lists year made as 1960. I can't believe it's that old.
I have seen a few Gheenoe clones over the years. Mostly they are one offs by someone who wants one but isn't willing to pay for it. So they make their own and it probably costs them more in the long run. Anyway that could be what you have here.
It is a well-made boat and very professionally done - I can't imagine it being a one-of-a-kind homebuilt, but anything is possible I guess. I put my 1947 Evinrude Sportsman on it - here's a pic.