Hi Li, I weigh 39kg. I always tie myself down when I'm lead belaying. The time when I didn't, the leader took a fall, I soared to the first draw, and the leader hit the deck :(.
Depending on the anchor position, sometimes I put two pieces in for the anchor to stop getting slammed onto the wall (happened a few times, not pleasant!).
I don't have any problem with locking off the rope. With heavier leaders you just have to lock down harder. The rope shouldn't burn your hands. |