Mark the calendar, I'm about to stand up for Ian (kinda)...
BASE and CRW canopies get a lower score on this quiz, even though they can have similar effects when handled improperly, per their particular situation. CRW air time (or, just flying relative to others in the sky) can be an incredible and valuable learning tool to understanding and being in control of your canopy dynamics, regardless of the canopy.
my calendar in marked,
as for everyone that has not done altitude hop and pops i love going out and playing. part of Brian Germain course is to go out and fly relitive with an other person. this does not mean that you have to stack it up....

. just to maybe touch end cells someone moves and fly base and the other person fly back to point. i would say one person should have done it with an experienced jumper before trying it with just any one. but as long as you take it slow and not attack with double front... ryan. you can keep everything slow and predictable. doing these things has made me more confident close to the ground and i would think will help your number go down. instructor signing out
now who wants to do a 4 stack