Objective: How can I keep a pot from boiling over the top?

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

OPTIONS:
[i] Lay a wooden spoon beside the pot.If it starts to boil up too high, the spoon will pop the bubbles and keep it from overflowing quickly;
[ii] Lay a wooden spoon over the top of it. If it starts to boil up too high, the spoon will pop the bubbles and keep it from overflowing quickly;
[ii]