Building on the earlier suggestion about that sandstone texture, you are totally right that grip is the number one thing you need for Zion! I learned ...
Just found this thread. You might want to consider the risks of traveling with just magnets tho. My brother once tried a similar setup for a trip to C...
Seriously, the BIGGEST mistake you can make is buying one of those super thick tempered glass protectors! I did that with my last Moto and it basicall...