I still print my own cuesheets and bring them along. Though I normally use my Garmin, things can go wrong, that's all. I also use the "Distance to Next" field, very important. I've seen instances where the designer didn't post a digital file and I had to draw and check the route in RWGPS for myself so I could use my Garmin. I used to also run a old-fashioned Cateye device, also a just-in-case, but the Garmin has been so reliable that I've given that up.
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Results matter