It seems this thread has meandered a bit to various subjects.
When it comes to training a student pilot for emergency descents and landings, I ask the student to tell me quickly where he is going to TOUCH DOWN. To have a student generally say 'in that field' is unacceptable.
I want them to be as specific as possible. Then we take it down.... and down.... and down.... Usually the student starts getting a bit concerned under 200'AGL. They get down right worried at 100'. But when they hit 50' they are about to scream.... At some point below 50' I have them go around.
From there, several things are learned.
First- did they even get close to the spot they had selected for touch down, and how good was their initial judgement of the landing site.
Second- how much time they had to perform their entire checklists, and which items had they forgotten (if any).
Third- if getting that close to the ground with a perfectly running airplane bothers them, then what will be their emotional/ pyschological state if they have to do it for real.
Before anyone jumps on me, allow me to say that I do not bust the 500' rule, regarding structure, vehicle, vessel, or person. (but we have scared the daylights out of some coyotes stalking a herd of antelopes
) And before a simulated emergency landing is taken to this degree, the student WILL show competency in go around procedures and the memory items on the emergency landing checklist. Only then is this exercise done.
As for a comment made earlier regarding having no place to land in the mtns. If this is the case, then you have already violated the PRIMARY RULE of mtn flying- "ALWAYS HAVE AN OUT". With experience in the mtns, you begin to see places to land which are reasonable, but escape the eye of the untrained. Even in the most rugged of terrain, there is almost always someplace to put it down on YOUR terms, not gravity's. You just have to be creative!