When you want to hard boil eggs,
just place them in a pot and cover them
with cold water.
Bring the water to a boil, cover with a lid,
and take off the heat.
Let them sit for 30 minutes.
The heat of the water will cook them completely,
and you will have less broken eggs.
Sounds much more simple than wondering
if they are done enough and/or
just waiting and waiting.