MercNil?
Why did you ask me about Squats?
BTW, do you think that it makes sense to do pistol squat negatives with a rope?
I was curious what sort of leg exercise you're doing; so I asked if you were doing some sort of knee bends.
It would, provided you do the negatives for a period of 4 seconds per rep. Based on my little experiments, if I can do 7 negatives of a weight I couldn't in the past for a period of 4 seconds, I can do one rep.

I'd suggest you do so on a box or your bench or a stool, so your motion is limited and you can strengthen your legs. And as it becomes easy at the partial range of motion, do a full range of motion pistol squat. Progressive movement. :3 It's an old way of getting stronger, but it works.

Got to love bob peoples. :3