This has been explained *multiple* times. The tracks can only be generated by SPOT points, so if a SPOT unit does not send out a point for a number of hours - it looks like the racer is straight-lining the course - especially in a particularly twisty area of the route. As far as your father's situation, don't you think there might be a more reasonable explanation than 13 of the 15 racers in front of him cheating?
This has been explained
This has been explained *multiple* times. The tracks can only be generated by SPOT points, so if a SPOT unit does not send out a point for a number of hours - it looks like the racer is straight-lining the course - especially in a particularly twisty area of the route. As far as your father's situation, don't you think there might be a more reasonable explanation than 13 of the 15 racers in front of him cheating?