Watch Tide (1966) Official Trailer

In the late sixties I picked up my seldom used Arri 35mm camera and set off for the famous tidal flats of Nova Scotia. This fragment is of an elderly farmer who fished a weir using his horse and carriage to go out to it with the ebbing time and home with the incoming tide. I thought I saw a nice structure for a film that even included the element of chase, that old standby of film narrative. Would the carriage get home before being engulfed by the incoming tide, would the fog appear and obscure all points of reference?