The secret sauce to setting a fiberglass pool shell isn't just about dumping in gravel—it’s about respecting the structure you’re working with. I'm sharing my perspective on determining the perfect water level in the deep end before we introduce the backfill. We have to know the bends of this specific shell, anticipate the water force pushing against the sides, and use experience to judge that critical two-foot margin. Get the backfill heights dialed in exactly right, or you risk major headaches