"what evidence would you accept to show there is a God?"
The criteria for what it might take for anyone to accept something on faith is going to be different for each individual person.
Because you don’t know what it might take to accept a belief in god doesn’t make you a fake/weak atheist, it makes you a honest atheist.
“I don’t know” is a perfectly reasonable, perfectly honest, and perfectly intelligent answer.
What is the right answer?
I would have to witness a true, supernatural miracle.
It would take a near-death experience where I leave my physical body and actually see Jesus.
A very vivid altered state of consciousness episode might do it.
Being suddenly cured when suffering a uncurable and deadly illness.
Seeing my dead parents rise from their grave.
Being visited by, and conversing with an actual angel.
Having everything around me destroyed by a tornado, but me and my entre family survive unscathed.
Being shot at point blank range by a thief and having the bullet ricochet off a button on my coat and surviving unharmed.
Calmly sitting on the beach and watching the sunrise, and just being overwhelmed by a feeling of immense love and warmth like never before.
Making toast and seeing an image appear on the surface of the bread.
I just woke up one day and BLAM!!!! I believe.
The right answer is:
I'll know it when I see it, but until then I just don't know.