Here now is a practical demonstration on impulsive tension, and why a large force applied for a very short period of time is bad for tow hooks.
"Well that's what you do with these straps, you just go."
Remember, when towing with a tow strap, to always pull very slowly; a little force can go a long way, if you know how to apply it. Which is gradually. You want to apply it gradually:
H/t Boing Boing