I am pretty sure I just heard two circlings, at the clubhouse and at the cut through. Both were mentioned while they were trying to mark up the map.
Singleton asked Zimmerman if it was at the clubhouse that Martin circled the car. Remember, in the first statement Zimmerman didn't say where the circling happened. Zimmerman didn't mention moving the car, so it seemed like the circling would have happened in the first place he parked.
In the second interview, as they drew on the map and they were on Zimmerman parked at the clubhouse, Singleton asked if this was when the car was circled, I think more than once. Zimmerman always said no until after the car was moved. There was only one circling, on TTL.
I linked the audio upthread. (One link for all the SPD interviews, except the reenactment.)