For a solid field repair, you need a “sun-cure” or “UV” resin kit. These are perfect because they cure quickly in sunlight, no mixing required. Grab a small piece of sandpaper to rough up the area, some squeegee or an old gift card to spread the resin, and a razor blade to trim the excess once it’s set. Toss it all in an old wax tub. This lets you seal the ding temporarily to keep the water out until you can do a more permanent, laminated repair later.