If you have a melon baller, use it to scoop out the zucchini. If not, a spoon will also work. I recommend taking a sharp knife and tracing around the edges of where you plan to scoop to make the scooping easier. Fresh zucchini is VERY delicate, so scoop gently and try not to poke through to the zucchini skin. I broke a few of my boats when making them for the first time.