yawing

Hi! Is it possible to get the H4-3D gimbal pointing straight down?? So the angle is looking directly down to the ground from above... (see photo) Thanks in advance!

I was trying out some POI at the weekend shooting 1080 24fps when i watched it back on my laptop the panning round was very jerky ive done a little bit of POI in 60fps and that was fine. In conclusion am I correct in saying doing POI or yawing fairly quickly in 24fps will produce a jerky shot?