I don't know what others do but..........
I will make at least 3 layers
on the bottom layer the gradient will be opaque
the next layer it will be 70-80% opaque and tilted between 5-10 degrees to the right
and the next layer it will be 70-80% opaque and tilted the same degrees to the left
It may not be the BEST way but I've found it works for me. 