Trying to picture how to catch a chicken without using hands?? Don't know, I just grab mine.
They make it easy because they squatt if I approach and touch their backs, then it's dead easy to pick them up.
I think if I couldn't catch one, I'd use corn to get them closer.
Foolproof method is to wait till they are roosting, then while they are sleepy, they are very easy to pick up.