Bit of a steep learning curve with this one.
I've included a few clips where 1) I flailed completely (because it's funny); 2) squeaked one out (after a dozen attempts raking my back over the knurling on the bar and/or getting my upper glutes stuck) although depth appears too shallow; and 3) checked the forum here for some tips and after a week of playing around attempted to implement more full-body tension and use of momentum out of the bottom. You'll note I've inserted a foam roller over the bar to reduce rakage - I think it's legit as it's not reducing the work my arms need to do or the range of motion my shoulders go through. Or maybe it's cheating?
Also included a couple pics of the iM for review. I recognize that weight isn't prescribed here but I've taken to holding a 2kg plate in my raised hand because I feel I can get deeper and hold the stretch more steady. Hope that's not counterproductive...
Thoughts?