Might I suggest, Viking, that if Watchout knows the subject he or she will be far better off than by knowing the "feedback"?
I have just spent 2 weeks completely retraining a student for this subject, who by his own admission had become fixated on the feedback which was insufficient and thereby failed the exam 3 times. He admits that the school where he sat the approved course discourages this officially, but since I find others that I encounter from the same school have a similar approach this policy is not being applied successfully.
I have feedback for Navigation, that is introduced in the normal flow of the course and allows the student an idea of what to expect, especially of the questions I see as odd or unfair. That does not mean that I would send students to an exam room if they could not answer a reasonable but entirely unexpected question within the syllabus.