The Coriolis effect is explained by the 23h 56m aether drift cycle I just explained and the triangle experiment is absolutely impractical.
Like I said, I haven't heard any good explanations for the coriolis effect - especially considering that the magnited of the coriolis effect can be calculated repeatedly with math.
You cannot dismiss the path "proof" as impractical. All you need is a compass and enough distance to make 3 lines of equal length, each with a 90 degree turn. Can be done quite easily in a plan, helicopter, or RC drone.