The metal nails are more effective for harder ground, e.g., grass, while the plastic nails are better on a softer surface, e.g., soft sand.
Tip 1: The standard game is only played on a surface where the nails (metal or plastic) can be used to secure the anchors and guy-wires.
Tip 2: The nails provided are designed for the right kind of surfaces. If the nails can’t penetrate the ground, the surface is too hard.