Obviously you have not been paying attention to your
instructors.
When clearing the low rope, the key is to loop the rope over one of
your boots. And by stepping on it, you form some kind of lock.
You can even have your arms hanging free, and you just stand
there on the rope.
Still, you need a some arm strength to hold yourself in place,
while you haul your legs up to form another loop, thereby, pushing
yourself up.
So the key, push yourself up using your leg power than using your
arm power.
