What's the best way to get Apple to do a non-warranty repair on your bricked or broken iPhone or iPad? Simple: tell the truth.
I have seen all kinds of schemes cooked up by people who have done something ill-advised to their devices. They have a strategy. They know how to fool the liquid sensors. They have a story for the dent they couldn't pound out. They play innocent when their product is mysteriously bricked. They have a plan for every contingency.