I recently saw a youtube video of someone holding the knife blade stationary in the tinder and drawing the rod across the back of the blade. I had never thought of doing it that way or seen it done previously. I am new to the wildness skills and would be grateful for feedback on what is the best way to use the ferro rods? What are the pros and cons? I thought using the knife stationary seemed safer and concentrated the sparks in the desired location. Just my initial observation.