If you can get two different colors of rope/line for each scout and yourself, it will help visualize the construction of each knot, bend, etc.

If you have the knots, bends, etc. already made up (knot board), as well in different stages of development in larger diameter rope/line, it helps to visualize the progression.

Lots of patients <img src="/images/graemlins/smile.gif" alt="" />

Pete