Don't trust the bumper. Get hookless straps(so if a strap comes off you don't impale something with a hook). Tell them to put out the $10-30 for tow hooks. If they refuse, you can wrap the strap around the axle or something. If they are real cheap, and have a welder.... tell them to weld chains to various spots of their frame for cheap strap attachments, that way they have that cheap toyota junker off-roader look
P.S. I have 15k straps, and I've put all of the force on them I could and they wont break. There was an idiot in his dad's truck with near bald tires who decided to peel out right next the the water at the lake...... He buried his truck to the point where the front tires weren't visible. So, My friend in his 4-runner used one of my straps to hook up to the guy. The ground under the 4-runner was kinda soft too, So i used my other strap to hook up to my friend, then a land rover showed up and hooked up with his strap the the back of me. we all pulled in 4-Lo, but it wasn't enough. Then a YJ showed up and hooked his winch to the guy in the truck as well. The next pull he was out.