"How was it done?" I hear you ask.
It's all a matter of focus...and a willingness to burn lots of film.
I firmly held a stick on the bottom of my motor drive on my camera and focused on the tip (focus on a point where you hope your subject will be).
Using a standard lens I ran around the back yard with Seamus in hot pursuit and the motor wind running.
One roll of film later I had this little gem on frame number 36, as for the rest of the roll...see below.
Sometimes you have to burn lots of film to get the shot.