If you have a jeep or big truck and you need jack the body up to full droop with the tires off the ground and all you have is a floor jack it’s kind of a problem. I don’t recommend putting blocks on the jack but I have done it and you probably have to. I made a simple mod to mine that bolts on or off for normal use. It’s much safer than blocks that could slip out and hit you. I always use jackstands.
