The SparkLite is good but not essential for a one-handed sparker. If you have a ferro rod (Boy Scout Hot Spark) you are good to go! For one hand use: stick your knife ¾ of the way into the ground and scrape the ferro rod against it. You will get big sparks that will light anything that can be started with a spark. The SparkLite will N-O-T light many things that will light with a ferro rod. There is also the Gene Ward method of cutting a slot in a piece of wood and putting a piece of hacksaw blade in it. Then scrape the ferro rod on the hacksaw blade for sparks. Also, the SparkLite requires more dexterity to use than a ferro rod. If your hands are numb, from the cold, the SparkLite might not work for you. Visual Impairment and stress are another problem with the SparkLite: see Chris Kavanaugh’s post above.