When free bogging the stope, always be clear about the mine site rules. The point that you must stop and not go past. The most common points used are the back of the bucket or the front wheels under either the brow or last row of ground support.
When to stop
Before starting to free bog the stope make sure you mark up your stopping point at the brow.
How do you stop at this point?
Mark a point on the off side wall level with your position in the cab were you want to stop the bogger