Originally Posted by Mike from NS
I must have seen this "drill" on a clip somewhere but that has been so long ago that I can't recall where. If this was a TI clip, then that answers my question as to whether it is considered a drill of value or not.
I like the drill you describe and use it regularly. It is similar, but not exactly the same, as the fish drill from Freestyle Made Easy. This drill may have been on the first TI videos, the one with the long axis combo drills, but I haven't watched those for years.
I also do the corkscrew drill with my hands over my head in streamline and roll onto my back to breathe -- good for practicing a tight body line and core muscle control.