You are correct, I meant smaller I said thinner. But it's looking to me like all I need to do it put like "bandaids" down the whole stem and fair it. My issue with this approach is there is no 6:1 tapper from each side of the hull to grab ontoI don't think using thinner glass will help structurally. The trick is to use smaller pieces of glass to fill in the taper. A piece of glass tape could be used at the edge of the stem. The final look of the stem is going to be determined by fairing. Use a good marine grade fairing, and fill and sand repeatedly to get a smooth finish.