Did a bunch of single Koreans starting from the bottom. How's the one in the video? At the top I'm not sitting on the bar despite the glute compression. My plan is to first continue to do single dips from the bottom until I nearly always succeed, then do singles from the top and after mastering those I should be able to string reps together.
Maintaining body tension in an arch hollow and pushing the hips forward while pressing upwards at an angle is how I'm cueing myself.