The below clip demonstrates how effective the fire plough can be with the right materials. A friend gifted me some Malayan Cherry which has a lot lower combustion point than UK woods and so it is more suited to the fire plough. As can be seen in this clip an ember is formed ridiculously quickly (7 secs) which is the fastest I've done on any method! And this is why the fire plough is the main method in places like Polynesia where there is wood suited to this method.
Here is a video I have recently made about the fire plough......