Alex: Really? i don't think it's for the ref to call "turnover", if there's a counter ruck the "clock doesn't re-set, it's still got 5 secs to be used by the side in the opinion of the ref had it to use, if they don't then it's a scrum to the other side, however if the counter ruck produces another situation where it's available but not being used, as a ref i'd call use it again, but in the 8 matches i've reffed this season we've had one situation where we had a scrum to the other side for "not using it"
