Its the outside leg. I don't have a free leg, because to me that means that it doesn't have a job. The inside leg is going to have to be just as active to get the boot. The entry where I initially snag the foot is crucial as well. I blast/flow into position before he can defend. Then as soon as I grab the heel, I through my hips up(they never come back down) to get the outside hook and immediatly crunch my core to grab upper body control of some kind, mostly the wrist. Its very hard for him to avoid because he has to bring his hands down to address your hooks. As soon as I can grab it I roll onto my outside ear and shoulder and either pull with my inside leg, or push up off his thigh and hip to get the boot. I switch the inside hook to the back of the knee, as I use the boot to pull me to his far ankle. The hand that was controlling the heel advances to it, once I get here its 96.75% done. Never stop climbing the rope or he's gone. As soon as you let go, or lose a grip, grab something else. Being able to move to the next grip by using your hips and hooks is the magic trick. If there is ever a point where one of your four employees doesnt have a job, that grizzly is gonna pin you down and rape you. This is the kind of urgency needed, to make it work nogi. Complacency only leads to failure or reset(same thing).
If he hides from the upper body grip completely, invert and look to push his armpit or ribs, via berimbolo.