Thanks for the comment.
The terrain on the hill was mainly dry sand and was extremely slippery. It maybe noticeable that the clips on the rooftop features more agile and typical footwork including more side stepping and passing steps than those on the hill, where some flexibility had to be traded off to compensate the instability. Most of the time when I could afford it, I step slightly diagonal with all strikes to help my attacks going around my opponent's defense. As seen in the schielhau, krumphau, scheitelhau section, also the first zwerchau shown on the rooftop, but since the camera was often put side way, it would be quite hard to tell.
As for why there were several zwerchau starting from the pflug, you may notice that my opponent was a Chinese stylist and he put his center of gravity very low. I had to adjust where I aim in order to even hit him. The first zwerchau was more typical.
I understand the position of vom tag is always a discussion here.

I use both of the versions in actual sparring and test cutting. I don't mean to advocate the one I shown in the video as the "only true way".

After all, it was "as-applied" and was not choreographed. Something imperfect was ought to happen.
