[NTG-context] [***SPAM***] Strategies to control moving footnotes

I have often the problem of moving footnotes (with activated grid setting). That means, the footnote is not on the same page as the footnotenumber, but moved on the next page. That apperas often if you have a book with many not-so-short footnotes. Maybe one has to accept that, but in some cases it is really ugly. How do you manish these cases, how to control in general this problem? It appears, if the footnote is not very short and the footnotenumber is at the bottom of the page (in the text). So the footnote on the same text would shift the footnotenumber on the next. Are there some automated strategies and keys in context, or is there no other way than manipulating the text itself? Regards, Huseyin