The Gregor 13'6" is in a class by itself.
I have a Gregor 15’6” that I bought a few years ago. If the 13’6” is cut from the same cloth it’s a great boat, mine is the best boat I’ve ever owned.
I mention the Gregor 13'6" because of personal experience with one and because it seems the ideal size for someone starting out who will surely face some wind waves crossing a lake. High bow, good V, unsinkable, roomy for its size, all welded construction, extremely seaworthy, easily manageable by a lone fisherman.