Like many people who use and appreciate the subtle excellence of charcoal grilling over propane, I use a chimney for starting my coals instead of *ugh* lighter fluid. They work very well, very quickly, and don't leave any funky tastes behind like petroleum. The best way that I have found to start the chimney is to take 3 paper towels, fold them into the size of one, and drizzle some cooking oil in the center.
Stuff this lightly into the bottom of the chimney, and add the desired amount of charcoal in the top, depending on how much you will need. Once you light the paper, the oil will keep it burning much longer than say, the frequently-used newspaper. The paper towels will also completely disappear, unlike newspaper which leaves a big nasty bunch of ashes behind.
Follow the above instructions for starting the chimney, but you only need to add 15 - 20 briquettes. Told you this would be fast and cheap! Light the paper towels, set the chimney on your regular grill, and let it be for a few minutes until your coals turn gray.
Do not under any circumstances use this technique and set the chimney on any type of concrete or cinder block (CMU) Concentrated heat like this produces can superheat the moisture in the concrete, and cause it to fracture violently or explode.
The way the chimney works, it draws air up through the bottom and the hot air from the coals shoots out the top. This burns much faster and hotter than in an open grill, and we can take advantage of this.
When this happens, set a small grate on top of your chimney - this will be your new rocket grill. You won't believe how well and quickly this works.
On go the fillets. You will see and smell the goodness almost immediately. Monitor the cooking constantly, this isn't something you can walk away from. Turn after 2-3 minutes. Repeat until both sides are done. Personally, I use a Thermapen from Thermoworks to make sure my internal temps are right - about 125°-130°. You may actually have to move them on and off the fire so as to not overcook the outside while finishing the inside - it's that hot.
Once you pull them off, cover the steaks lightly with foil and let rest for 5 minutes to let the juices redistribute. If you cut it open now, all the nice juice would run out, and leave the meat more dry. If you wait, you get this:
The best part is that what's left f the coals will soon die out, and you have a much easier cleaning up job than if you fired up the whole grill.