To hoop around your neck, you're going to want to start by noticing your stance. Your feet should be a little wider than hip distance apart. Your knees should be soft, your belly should be nice and strong, spine nice and straight. So, we're going to keep our neck nice and straight. Not too much tension, really relaxed. And then you're going to think about just shifting your weight from one foot to the other, similar to waist hooping.
Now, as I have the hoop around my neck, I'm going to keep it pretty low on my neck. You don't want a hoop appear underneath your chin, because that is a tender area of your neck. The hoop should actually never touch you there. So give the hoop a spin. And then you're going to immediately start shifting your weight from one foot to the other. If you notice, the hoop is staying really low on my neck, underneath my Adam's apple, right above my collar bones. And I'm pushing against the hoop with the shifting of my weight, with the left side of my neck to get the hoop to go around to the left. So, it's more the momentum coming from the side, rather than around in a circle.
Then, if we switch directions, obviously you just reverse everything. You're pushing against, with the right side of your neck, and shifting your weight from one foot to the other. That's how you hoop around your neck.