What I've been doing is I'll set a timer and do a couple of pull ups and then hang afterwards, until the timer goes off. I'll add a few seconds to the timer and a rep or two more every couple of days. It seems to be working. I've gotten up to being able to hang for 51 seconds until my grip starts giving in. In the meanwhile, I'm going to do reverse grip chins for sets on my back days and just do wide grip lat pulldowns as assistance until my back gets strong enough to where I can do pullups for sets. Thoughts?