Objective: How do I prepare the piping bag when making pavlova cookies?

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

Options are: *Cut off the tip of the piping bag with a 2-tined fork so that the metal piping tip sticks out but is still held in place.. *Cut off the tip of the piping bag with scissors so that the metal piping tip sticks out but is still held in place..
Cut off the tip of the piping bag with scissors so that the metal piping tip sticks out but is still held in place.