That's a real bummer. I think at 30#, it will probably hold. You know what you could do to convince yourself? Take your bow, cut off whatever you're going to cut off from the ends, and put a dab of Smooth On on the fiberglass, let it cure, then try to pry it off with a flathead screwdriver. Or, you could glue two of your scrap pieces of fiberglass together and see what it takes to get them apart.