
Having looked at both the S1 and the new Powakaddys..I can only say that Powakaddys must really suffer wherever you are playing! The clearance on their front wheels looks a couple of cm less than that of the S1.
Back in my Powakaddy days, I used to just use a twig from the course..or a flexible plastic ruler.
Ratty..not a particularly constructive answer ;o)