Should lowering a casualty past a set of knots on assessment day?

This week we turn the normal level 3 rescue, passing a set of knots on its head.
Why don't we get level 3's to lower a casualty and have to to bypass knots?
We look at situations where you may need this skill in the field, and options for how it is done.

Let us know if you would like this rescue added to the level 3 syllabus.