Thanks for those suggestions, much appreciated. My new interior has finally arrived up after 15 months of waiting…supply chain issues. 🙄 I’ve decided to use the other half of the 4 x 8’ sheet of marine plywood. If it doesn’t turn out, I’ll start a new skill set in fiberglassing.
I made a new template after installing the rear side panels and found my original template way off, not wide enough, too deep and corrected the side contours. Cutting the panel more carefully to have consistent parallel channels to help bend it evenly. Next up, the makeshift water tank and improving bending the panel.