....the prop has to be pulled through in a fast, positive hand propping motion to
generate a spark, or be turning with the electric starter to produce a spark.
You must be mixing apples and oranges, as this sounds like it might be the shower of sparks (not familiar with that system). Impulse coupling mags click off suddenly and can do so with little movement. Look at about 2/3 throught this document.
http://www.allstar.fiu.edu/aerojava/...ht.htm#impulse