Recently we have had a fella pull a shoulder apart when trying to pull a wheel off a truck hub. We've all done this, and it will sometimes surprise you when it comes loose. These little strains can put you out of commission for a couple weeks. Not the kind of thing you'd want to happen after a SHTF event, so I've been keeping my eyes open for ways to do things while reducing the chance of injury. Working smarter, and not harder. The old slap hammer has always been a tough piece of gear to use without straining. That big sliding hammer on a heavy steel bar will pull stuck axles and hubs eventually, but the sudden stop that's necessary at the end of the bar sends a shock all the way down your arm. It's also pretty tough to do with your weak arm. One solution turns out to be not using your hand on the sliding hammer at all. Wrapping a cloth fender cover, about the size of a large beach towel around the sliding hammer and twisting it creates a handle that can essentially be swung like a baseball bat. Using both arms and a good batters stance will put more whack on that sliding hammer than the biggest guy in the shop could possibly muster. This is another one of those "Why didn't I think of that 30 years ago kind of things."