Thanks! I've seen some timing systems that are used in triathlons but the main problem was making a field that was 25-30 feet width but a tight spread (1 foot).

Thanks! I've seen some timing systems that are used in triathlons but the main problem was making a field that was 25-30 feet width but a tight spread (1 foot). Do you think active would fair better in that respect? Last time I checked it seemed so but it also jacked up the price a bit. I know that for Olympic BMX they are using some type of active transponders but I can't think that any commercially available solution would be accurate enough. I assume they have to be doing camera checking too but for .000 second split times even a foot spread seems like a wide margin of error.