trail movement

[refjef40]

Around my assoc. there seems to bee some disagreement on trail position.First case if I am on the left side of the key as trail and the ball goes into right corner does everyone say slide up to about free throw line extended or
come over to right side three point line area? Second case if ball goes up above on right say above the three point line should I go way up high right or down to observe? I had one evaluater pretty much say go down to free throw anytime its on the other side.Another college guy said go way up on the other side if the ball is up on that side.Being up is what I had been doing and got gigged for it.