Since you are using a GPS, upgrade to a baseplate compass with UTM scale for plotting UTM coords on a map. The GPS I use for hiking is a non-mapping Garmin Geko set up in UTM which I can plot directly on a chart. Then I turn off the GPS and navigate with chart and compass.

Some folks navigate with GPS as primary. I prefer to navigate with GPS as back-up; it saves on battery life and keeps compass/map skills from atrophy.