The sensor is fragile. That is why I recomend encasing it it glue (epoxy, shoegoo, etc) once mounted so the solder connections of the wires is supported. There are a ton of pictures and recomended mounts in this thread. Scan through the thread and you will probably find a method you like.

As for sensing the magneto or spark - Not on the immediate horizon but I am toying with an idea for an device that will measure spark voltage and number of sparks (i.e. to be compared with number of crank turns for analyzing ignitions). Not near term though.