As it sounds like you are going to be riding with these guys for a while, this might help you develop safer more effective plans for them in the future, and if they could learn it themselves even better.
1st a progression will always keep you safer, and make you better win/win
when building a progression each step build on the one before it, a good phrase to follow when building a progression is:
Static, Simple, Complex, Freeride
Static - build the skills not moving so when you mess it up it doesn't hurt
Simple - low speed, low consequence,
Complex - add in more slowly (in this example coming out regular or locking in)
Freeride - practice practice practice
How i get students (kids especially) in to this is by explaining it as you would to adults:
It may seem like we are progressing slowly by doing this, however trying a awesome trick 50 times and messing up EVERY time and maybe even getting hurt will slow your progression down a lot more than trying it static 10 times, simple 10 times, complex 30 times. Same number of tries = your a better rider and safer... Nothing slows progression like an injury!