Loosen the friction sway bar so it slides easily by turning the crank handle. After installing on both little balls, tighten the handle crank as much as you can by hand. Give it an extra "umph" and that's good. The tighter it is, the better it helps control sway. But there is a point where too tight is too much, so never use a cheater bar to make it tighter. However, it is OK to use a cheater bar if you need to initially loosen it.
Once it slides easily, remove it from both little balls until needed the next trip. I used one for years and years. I had to replace it once with a new one as the old one finally froze in place and I ended up breaking the handle to when attempting to loosen it. That was after 10 years of use too.