Cool question, lets use a kick flip as an example and your going to land in a 50-50 grind on a rail simple but cool trick.
But where do you look?
I tend to look at my deck under my fingers and then when its half way through the flip and i know the catch is coming up, i start to look towards the rail as it gives me a better idea of my landing point.
not sure if anyone eles has these weird thoughts like should i bee looking at my board or where im going....