rodinal
film user
I do use either photo-flo or sistan as a last dip for the film then hang to dry. No squeeging or anything else. As I understand, photo flo was designed to have the water flow off the film. Works for me.
Agfa Sistan was a totally different product, not an Agfa alternative to Photo-Flo, and its proper use demanded wiping the film before hanging it to dry. AFAIK, Sistan is already discontinued, so this warning has only an historical purpose.