I want to trigger number 1 cylinder to match the exhaust pulses using the First Look transducer.

I was just curious what people use to trigger of number 1 cylinder on a coil on plug vehicle. I know you can go off the primary signal, but is there other options? I have seen the "wands" that can be placed on the coil to view the secondary ignition. Can this be used as the trigger for number 1? I a...