Nice to have a loose end finally tied up.
From a list of Keaton titles and my vague recollection of it being set around a river, I suspected that must have been the film, but could not find any info online that gave me enough clues to specifically place the scene in that film.
I think it is one of those "folk related" snippets of info worth being on record via Mudcat.
Thanks.
Quack!
Geoff.