A few years ago I was hiking southbound in the winter and came across a couple of sobo. So naturally we started talking about gear and I complained about my Micro spikes. I had been caring them for about 1000 miles and never used them. They told me a trick they learned on white blazes where you have these little tiny bolt like screws and you screw them in your shoes for traction. They also carried a penny to turn the screws into your shoes. I've gone way back and checked years ago but all I could find is people talking about basically the same thing. Has anybody ever heard of this trick or know about this trick or try this trick? I really don't want anymore what if's in my pack and I am going to be starting my thru hike after the kick off so I need something. I really don't want to go out there and find out they don't work and end up needing a helicopter ride.