Objective: To use a plastic tape dispenser

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

Select from: - Grasp tape dispenser very loosely between forefinger and thumb, pull plastic tape up and away from spool, then pull it down over plastic end with sharp points and rip off.; - Grasp tape dispenser firmly between forefinger and thumb, pull plastic tape up and away from spool, then pull it down over plastic end with sharp points and rip off.;
Grasp tape dispenser firmly between forefinger and thumb, pull plastic tape up and away from spool, then pull it down over plastic end with sharp points and rip off.