Easiest cheapest way to fix dent

I've been with Dent Wizard for 24 years this summer. The process that we use is not conducive to older cars with thick sheet metal. I've been able to fix a few dents here and there over the years, but for the most part my tools bend before the dent does. If you don't believe me come on over and I'll let you look at the dings on my Dart that have been there since I bought it 12 years ago.
Hey BrianT I use to work in Fife Washington on the new cars that came in from over seas and learned to do PDR work back in the mid 80's Never bought a tool but made my own and still make my own tools today. never been to school for it and watched a few guys do it back in the 90's.
I just turned 62 a few months ago and still do PDR work here in North Dakota but loosing my eye for it.
Last summer we had a bad hail storm with tennis ball size hail and was able to get most of it to come out but it sure kicked my butt.
I agree hard to get a dent out of an old car without using bondo and a dent dog or a good hammer.
Glad to see another PDR guy on the site.