Re: shiho nage
only those from the old azuma air base, Iwama style, and, under osensei's idea, which kissomaru did for a while....in katadori shihonage ura, uke's hand goes only down, never rises, from the moment he grabs you, until he's pinned.
in order to accomplish that, you have to do two, of what are today called, 'tenkans.' The 'never rises' and two tenkans was also true for kotrgaeshi.
No one does it that way any more, not even the 3rd dosho, Saito never could. But, it was osensei's idea to do so.