I pin to the leaders and then sew basting stitches across the top to hold the whole sandwich in place. I hate getting stuck by pins so after basting I remove the pins. I have extra leaders so if I need to remove a quilt I can just slip one set of leaders off and slip the next set on...hasn't happened yet so you can probably get by with one set. I never thought the zippers looked all that time saving but those Red Snappers look interesting, I know several people who have purchased them and seem to love them.