I'm assuming you mean pause right at the very bottom? Just like pause squats?
If you are collapsing - work on your back.
Anything specific? The moves I rotate through are: one arm row, barbell row, row machine, inverted row, pullups, plus the obvious deadlift.
But is this general advice "do more of the basics" such as the moves above or are you suggesting something more specific?
EDIT: Farmers walks! Since changing gyms I do not do these. These gave me a huge "perceived" strength on OHP. Can't really describe it but when doing OHP the day after FW's, I had this feeling that my back was giving a super-strong base of support to push against.