Objective: How do I add stripes to my piping bag when making pavlova cookies?

Which of the following solutions is more sound in terms of naive physics reasoning?

Choose from:
(I) Lay out a large piece of plastic wrap. Using the gel coloring and water, paint stripes on the plastic wrap. Put half of the meringue in the center of the plastic wrap, taking care not to deflate it, fold the plastic bag around the meringue and slide through into the piping bag.
(II) Lay out a large piece of plastic wrap. Using the gel coloring and water, paint stripes on the plastic wrap. Put half of the meringue in the center of the plastic wrap, taking care not to deflate it, fold the plastic bag around the meringue and slide through into the 3-tined fork.
(I)