I always use a plier-type (teeth) wrench from Griot's Garage, and has never failed me so far. When it's tight like with the Connie, progress might be slow until loose enough to remove by hand, but doesn't take more than a minute. And yes, the first time it's going to be a b*tch. After that, if you just hand-tighten them (which is what I have always done for decades with zero issues), it's much easier to break them loose.