I've used the insides of my boots to start a hole too, but that's a little hard on the footwear. The starter thingy is a wear item. They're not terribly expensive. You really should make a dimple with some kind of bit (even if you just use a chisel and take a chip out) and use the pilot thingamabob. Just don't forget to take it out when you have a decent groove started!! That's how people ruin them.
One reason not to give DIY advice:
Catch a man a fish and you can sell it to him.
Teach a man to fish and you’ve ruined a good business opportunity.