I never use GPS, because it's BS --- I don't like somebody telling me where to go --- I always bring a map and compass
wherever I go !
He who needs GPS should learn to use topo maps better, 700 peaks now, yet to need one!
Hiked in to climb Stevens Peak from the south approaching via the direction of the Tatoosh Lakes outside MRNP. Found remnants of an old trail along the ridge although it would come and go and disappear entirely in sections. Bring a good topo map and GPS on this route. All day adventure.