I've also pulled wreckers out, and even an OHP suv that was stuck on SH33 that wreckers couldn't/wouldn't get to. I'm just winching, not loading them in the back of my Jeep, so I'm not exactly competing with what wreckers were designed to do. I imagine half the cars getting towed at the police rate are just getting auctioned from the impound a month later anyways...
Justify all you want, still illegal. Recovery falls under wrecker services by state law. I'll just leave this here... http://www.dps.state.ok.us/ws/WSManual.pdf