I'm restoring a 1959 12' Starcraft Speedster. This is my first boat project, so I'm learning as I go. I need to build a new transom, and I want to make sure I'm taking the right approach. Since the sides of the hull are tapered inward at the top and the knee braces hold it tight in front, it's impossible to remove (or insert) the transom without a cut. I figure that they must have installed the transom before riveting the knees at the factory. Since I am not confident in my riveting skills, I want to ask if anyone has any clever solutions for the novice? The best I've been able to come up with is to cut separate pieces for the tapers at either end (see attached drawings). Thank you!