I'm building a Hiawatha and I'm starting to wonder about how I'm going to cut the strips along the sheer line at each end.......they curve up quite a bit from station 3 to station 6. I'm assuming they're cut before the fiberglass goes on ?? Also...is there a secret to ensuring that the curve on each side is the same ? I was thinking of trimming one side, and tracing that line onto a sheet of paper then using that as a template for the other side.