When Nukina sensei visited my Dojo I demonstrated my Seishan to him. I don't remember why, but I did. When I finished he said: "AJ, your Seishan is very good".
Looking back I have a thing or two to say about it, but it still serves as a good example.
One year before Ishikawa sensei passed away, we did a demonstration in Kavarna, Bulgaria. This is the footage from Seishan.