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From Fellrnr.com, Running tips
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I've not tried either of these outsoles, as the Zegalite is only 4.5mm and the Zegama is only 4mm, which isn't much different to a standard trail running shoe.
=Adding Metal Spikes=
I screw in supatracks metal spikes for winter running, which adds grip on icy surfaces. They are awkward to screw into the Reebok sole, but it's possible with a little practice and swearing. These spikes can add extra grip on some slick rock, as the metal spike digs though any surface film. However, on harder smooth rock, they seem to have less grip, so it's not a perfect solution. The metal studs reduce the wear a little on the Reebok sole, and only rarely come out. The main downsides are cost and effort adding them, which can be a bit of a pain.
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Frankenshoes spike.jpeg| The smallest of the supatracks spikes, the 1100 (https://supatracks.com/boot-studs/)
Frankenshoes spike tool.jpeg| The spike in the tool used to insert it. This is tricky, and I had to file the tool down slightly to get a better grip, and I have to use vice grips to hold the screw end and push the tool on hard. Unlike a screw, the spike doesn't have a tapered thread, so it's hard to get it started.
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==Screw in or Slip On?==
The alternative to screw in metal spikes is to have an overshoe that has additional grip. Common brands include Yaktrax or Kahtoola exospikes, and I've used both. The advantage of the screw in spikes is they work in all conditions, and the additional grip can be handy on some surfaces even in summer. The screw in spikes add little weight and are always there. Overshoes are relatively heavy, and have to be put on when needed, and that can be hard if the weather is cold. Stopping to put overshoes on snow covered shoes with cold hands is a grim experience sometimes. I've also had problems on mixed surfaces, where there's exposed rock and ice with Yaktrax falling apart. Overshoes are also heavy and bulky to carry, so I've given up on mine completely, and prefer screw in spikes. (If you need crampons, then you need crampons, and spikes won't help. I have Kahtoola microspikes, which are a half way to crampons that work with running shoes, but rarely use them as I don't like running when things are that bad.)
