I used to be in the Army, field artillery to be specific, and we had to use different calculations for different locations on the earth in order to impact targets effectively. The ballistic equations used to calculate projectile flight path included corrections for the Coriolis effect and the corrections had to be different for each place on Earth you were firing from.
I have done this hundreds of times with great success, so I'm pretty convinced to Coriolis effect is legitimate. This, for me, is one of the biggest hurdles in buying into the whole flat earth conspiracy.

Also, what's powering Google earth, cell phones, and all other GPS devices. I've personally used a GPS device with great success on two continents which doesn't seem possible without satellites orbiting the ball earth in low orbit.